Category Archives: Quantum Physics

News Reports| Lafayette Journal & Courier

WEST LAFAYETTE, Ind. Three Purdue professors have been selected to receive the highest honors in their respective fields:humanities and social sciences andquantum sciences, according to a Purdue press release.

ProfessorEllen Ernst Kossek is a distinguished professor ofManagement in the Krannert School of Management. She was nominated by her peers andchosen by university president Mitch Daniels to be giventhe2021 Lu Ann Aday Award.

TheLu Ann Aday Awardwas first established in 2017 by Purdue alumna Lu Ann Aday, a distinguished professor in Public Health and Medicine at the University of Texas School of Public Health-Houston, according to the release. This award annually recognizes a member of Purdue faculty who has achieved major impacts in the field of humanities and social sciences.

Kossek is a social scientist who researches how the functions of the workplace - employees, managers and overall organizations - can improve workplace cultures and the "effectiveness of work-family policies," according to the Purdue release.

Along with her research, Kossek also continuously organizes the"Dismantling Biases: Bridging Research to Practice"conference. Research from this conference has been published as books and referred articles, as stated in the release. The next conference is set for March 22-24, 2022.

Kossek will givethe Lu Ann Aday Distinguished Lecture at 2 p.m. on Nov. 1. The virtual lecture will be made available to the public.

Michael J. Manfra was nominated by his colleagues and selected by president Daniels to receive theArden L. Bement Jr. Award. This award was first established in 2015 by Purdue professor Emeritus Arden Bement and his wife, Louise Bement, to "annually recognize a Purdue faculty member for recent outstanding accomplishments in pure and applied sciences and engineering," according to the release.

Manfra is receiving this honor for his work in quantum physics. He and his team at Purdue reporter a landmark experiment in 2020 that found evidence of "anyons,"fractional statistics of quasiparticles. This was the first time direct evidence of such a substance's existence sincequasiparticles were first proposed in the early 1980s.

Manfra serves as thescientific director of Microsoft Quantum Lab West Lafayette andcontributesto the Quantum Science Center. He will give theArden L. Bement Jr. Distinguished Lecture at 3 p.m.on Nov. 12. This will be a virtual lecture and will be made available to the public, according to the release.

Yong Chen, a professor of physics and astronomy, electrical and computer engineering and thedirector of Purdue Quantum Science and Engineering Institute, willreceive the 2021 Herbert Newby McCoy Award. This prestigious award is given to those who have show outstanding work in the field of natural sciences.

Chen has successfully implemented a program at Purdue that focuses on "timely problems in nanoscience," according to the release. He continues to lead a large research group that works on quantum matter and devices.

Chen was one of the first in the world to "synthesize and study large-scale graphene and graphene single crystals," as stated in the release. As such, he is considered to be a global leader ingraphene-based materials.

In addition to his research, Chen serves on theGovernance Advisory Board forQuantum Science Center.

The 2021 recipients of these distinguished awardwill receive a cash prize along with a small grant for their university scholarly activities.

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Purdue professors recognized with highest honor in their fields - Journal & Courier

American physicists Richard Feynman and Yang Chen Ning, circa 1950s.

Quantum particles exist and don't exist. Space is likely a moldable fabric. Dark matter is invisible, yet it binds the entire universe. And our universe, created from an explosion 13.8 billion years ago, is infinitely expanding into something. Or, maybe nothing.

Unless you're a trained physicist, at least one of those statements probably hurts your brain.

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We experience a sort of cognitive dissonance when attempting to comprehend the vastness of such unimaginable, complex concepts. But theoretical physicists think about, and even conjure, these ideas all day, every day.

How do they do it?

According to new research, published Oct. 11 in the journal NPJ Science of Learning, physicists' brains grapple with counterintuitive theories by automatically categorizing things as either "measurable" or "immeasurable."

"Most of the things we encounter every day, like a rock, a lake, a flower, you can say, 'Well it's about the size of my fist... but the concepts that physicists think about don't have that property," said Marcel Just, a psychologist at Carnegie Mellon University and first author of the study.

To study exactly how physicists' brains work, Just and fellow researchers gave 10 Carnegie Mellon physics faculty members -- with differing specialties and language backgrounds -- a ledger of physics concepts. Then, they used fMRI (functional magnetic resonance imaging) scans to examine the subjects' brain activity as the individuals went down the list.

In contrast to normal MRIs, which help with anatomical studies, functional MRIs can detect brain activity based on fluctuations in blood flow, glucose and oxygen.

Turns out, each physicist's brain organizes concepts within the field into two groups. The researchers were just left to figure out how to label each group.

"I looked at the list, and said well, 'What do concepts like potential energy, torque, acceleration, wavelength, frequency ... have in common? At the other end of the same scale, there are things like dark matter; duality; cosmology; multiverse," explained co-author Reinhard A. Schumacher, a particle physicist at Carnegie Mellon University.

The average person might lump Schumacher's descriptions on the latter end of the spectrum as mind-bending and inexplicable, but the most important connecting factor, he realized, is that they're immeasurable.

In the brain scans, these concepts didn't indicate activity of what he calls "extent," loosely referring to placing tangible restrictions on something.

Physicists' brains, the team concluded, automatically discern between abstract items, like quantum physics, and comprehensible, measurable items like velocity and frequency.

Basically, the stuff that provokes a sense of perplexity in us non-physicists doesn't elicit thoughts of "extent" for them. That's probably why they can think about those things with relative ease, whereas we begin worrying about scale.

Speaking from experience, Schumacher says considering abstract physics ideas as a student can be very different from conceiving them as a longtime physicist.

"I think there's a sense that as physicists grow older, the concepts kind of crystallize in the mind, and you end up using them in a more efficient way," Schumacher said.

"The more you use these ideas, the more they become like old friends."

The brain scans also support that assertion. Not only did the team test faculty brain activity, they also looked at physics students' brains.

"In the old physicists who have been doing it for years," Schumacher said, "it's like the brain is more efficient. It doesn't have to light up as much, because you're going right for the thing right away."

Additionally, Just noted the professors "had more right hemisphere activation, suggesting that they had a greater number of sort of distantly associated concepts."

While a physics student might relate velocity to acceleration, it seems the professors were relating velocity to much more niche subjects activated by remote locations of the brain. Velocity of the universe's expansion, perhaps?

Just emphasizes how evolution of the brain to accommodate new, abstract ideas happens to all of us. Perhaps only theoretical physicists can easily comprehend duality or a multiverse, but people working in other fields, of course, ponder complex ideas of their own.

Chemists, for instance, have to visualize unseen orbital structures of atoms and bond configurations only drawn in textbooks. And the general public, over time, has adapted to inventions like iPhones and the cloud. Think about it. We can comprehend the cloud, which is pretty bizarre.

Imagine traveling back in time to the 1700s and explaining to someone the workings of an invisible data storage mine. They'd probably feel the way we do when we picture the quantum domain -- we'd be the "physicists" to them.

"We have this understanding now," explained Schumacher. "Even if you develop some new scientific concept, we can more or less predict what the brain is going to do with it."

For instance, during the exercise, when asked to think about oscillations, Just said some subject's brains activated sections relating to rhythmic activity. The organ had basically repurposed areas used in ancient times for general rhythms, like maybe music, to allow for modern physics concepts.

"The idea of sine waves is just a couple hundred years old," Just said. "But people have been looking at ripples on a pond forever."

Just also suggests it could become possible to actively help the brain repurpose itself, harnessing its ability to adapt. If we allow children to expand their minds through education by introducing abstract concepts sooner and more rigorously, he says, maybe one day they can readily imagine things the way scientists do.

Even further down the road, he says the findings could inform studies of mental health -- how does the brain's organizational and adaptation capabilities operate while in distress?

"I think it's the most fascinating question in the world," Just remarked. "'What is the essence of human brains? How can we make them healthier; think better?"

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Scientists decode mysteries of the brain with dark matter and the multiverse - CNET

Avi Loeb, the former chairman of the astronomy department at Harvard University, is very well known in the scientific community for his outside-the-box (to put it lightly) thinking.

The decorated astronomer and theoretical physicist has in the past stated, among many things, that alien tech visited Earth in 2017, that there could be as many as a quadrillion alien spacecrafts traveling in our solar system, and that artificial intelligence will be the key to communicating with aliens, is now suggesting that our universe may have been created in a lab by aliens.

In an op-ed published in Scientific American this week, Avi Loeb posits, Now there are a variety of conjectures in the scientific literature for our cosmic origins A less explored possibility is that our universe was created in the laboratory of an advanced technological civilization. Since our universe has a flat geometry with a zero net energy, an advanced civilization could have developed a technology that created a baby universe out of nothing through quantum tunneling.

This possible origin story unifies the religious notion of a creator with the secular notion of quantum gravity. We do not possess a predictive theory that combines the two pillars of modern physics: quantum mechanics and gravity. But a more advanced civilization might have accomplished this feat and mastered the technology of creating baby universes. If that happened, then not only could it account for the origin of our universe but it would also suggest that a universe like our own which in this picture hosts an advanced technological civilization that gives birth to a new flat universe is like a biological system that maintains the longevity of its genetic material through multiple generations.

Related: TikTokers Immortality Theory Video On Life After Death Is Blowing Millions Of Minds

Got all that? Buckle in, theres more.

Avi Loeb also suggests that because we do not have the ability to reproduce the astrophysical conditions that led to our existence we are a low-level technological civilization, graded class C on the cosmic scale.

We would be higher on the scale, says Loeb, if we possessed the ability to recreate the habitable conditions on our planet for when the sun will die.

In fact, because of our deficiencies, he says we may be labeled class D since we are carelessly destroying the natural habitat on Earth through climate change, driven by our technologies.

A class B civilization could adjust the conditions in its immediate environment to be independent of its host star. A civilization ranked class A could recreate the cosmic conditions that gave rise to its existence, namely produce a baby universe in a laboratory.

Loeb concludes, The possibility that our civilization is not a particularly smart one should not take us by surprise. When I tell students at Harvard University that half of them are below the median of their class, they get upset. The stubborn reality might well be that we are statistically at the center of the bell-shaped probability distribution of our class of intelligent life-forms in the cosmos, even when taking into account our celebrated discovery of the Higgs boson by the Large Hadron Collider.

We must allow ourselves to look humbly through new telescopes, as envisioned by the recently announced Galileo Project, and search for smarter kids on our cosmic block. Otherwise, our ego trip may not end well, similarly to the experience of the dinosaurs, which dominated Earth until an object from space tarnished their illusion.

Related: Two New Dinosaur Species Discovered, Including The Nightmarish Horned Crocodile-Faced Hell Heron

If hes right and our universe was created in a lab by aliens then there are numerous other questions that need to be answered, such as, are our creators able to manipulate us and/or control our destinies? Or are we just part of some high-tech simulation as multiple scientists have hypothesized?

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Harvard Astrophysicist Shares Wild Theory That Our Universe Was Created In A Lab By Aliens - BroBible

A set of guidelines that describes the use and development of a promising class of quantum materials is featured on the cover of this months Nature Review Materials.

In an article featured on the cover of this months Nature Reviews Materials, researchers at the U.S. Department of Energys Argonne National Laboratory, the University of Chicago, and institutions in Japan, Korea and Hungary provide a blueprint for a class of materials that is quickly emerging as an important player in quantum science: crystals with defects.

The defects irregularities deliberately embedded in the crystals structure act like a trap for quantum particles. In their most fundamental form, these systems are known as qubits, the basic unit of quantum information.

That Nature Reviews has focused an entire issue on the topic of qubit materials recognizes the prominence of this area of research. Were moving quantum science into the realm of usable, scalable devices, and developing quantum materials is foundational to that effort. David Awschalom

The research teams article in Nature Reviews Materials is one among several in an issue devoted entirely to the development ofquantum systems.

That Nature Reviews has focused an entire issue on the topic of qubit materials recognizes the prominence of this area of research, said the articles lead author David Awschalom, Argonne senior scientist,the University of Chicago Liew Family professor in molecular engineering and physics, and director of the Chicago Quantum Exchange. Were moving quantum science into the realm of usable, scalable devices. Developing quantum materials is foundational to that effort.

A mashup of quantum and bit, the qubit corresponds to the traditional computing bit. Its physical realization can take on a variety of forms: It might be a lab-made molecule. Or it could be an electron traveling in a specialized superconducting circuit.

It could also be a particle of light trapped in a defect deep inside a fleck of diamond. This defect-in-a-crystal family of materials is the focus of the Awschalom teams study, and they go by a fancy name: solid-state spin qubits. (The term spin refers to a quantum property of an electron that scientists manipulate to process information. Solid-state materials comprise insulators or semiconductors, such as diamond or silicon.)

One advantage of a semiconductor qubit is that you can potentially leverage many of thesolid-state technologies that are readily available from the semiconductor industry: integrated devices and circuits and the nanofabrication and processing that comes with solid-state systems, Awschalom said.

Researchers engineer qubits based on how they will be used, whether in computing, communication or sensing, opening powerful new ways of processing information. Quantum sensors are expected to operate with many times the resolution of todays sensors, enabling the study of human cells at the molecular level. Quantum communication networks promise to enable the transmission of hackerproof messages. And quantum computers will be able to rapidly game out complex simulations such as those used in the pharmaceutical industry, enabling faster drug delivery, for instance.

The development of practical qubits is key to a quantum future. In the Awschalom teams handbook on solid-state spin qubit materials, researchers lay out their properties, engineering considerations and potential applications.

We aimed to be materials-agnostic. We arent making direct suggestions about what materials one should use in developing quantum devices, said co-author F. Joseph Heremans, a scientist at Argonne and University of Chicago. Instead, were saying that, if youre thinking about designing these devices from the ground up, these are the properties and behaviors youll want to consider.

Both the host material and the defect are taken into consideration.

It highlights the intricate interplay between the defect and the host material and the complex properties that need to be balanced for specific applications, Heremans said.

For instance, many quantum communication devices are designed to be compatible with todays telecom fiber optics, which send and receive infrared signals. Qubit materials that transmit light in the infrared spectrum, rather than the visible-light range, are better suited to such devices.

Quantum sensing devices, on the other hand, are often designed to pick up signals from a nearby source. Since quantum sensors arent subject to the same strict, long-distance, fiber-optical constraints, they tend to work well with materials that transmit light that is easily detectable in thevisible-light spectrum.

The research teams blueprint is the result of 10-plus years of research on solid-state spin defects.

This can be a resource for people coming into the field or are curious about it graduate students, postdocs, people writing research proposals, said co-author Giulia Galli, a scientist at Argonne and professor at the University of Chicago. Having this set of guidelines means they wont have to reinvent the wheel. They can use this guide to consider how we think about qubits and all the intricate properties they have.

And who knows the teams blueprint may become one chapter in a future qubit compendium that encompasses the full breadth of quantum materials.

Were at the threshold where the field of quantum information is moving from science to engineering. Practical quantum technologies are on the horizon, and materials development is one of the biggest challenges on our way to realizing them, Awschalom said. As a collection, the Nature Reviews articles present interesting avenues for research and motivate people to think broadly about this fast-growing area of quantum materials.

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This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division.

Nature Reviews Materials

Commentary/editorial

Not applicable

Quantum guidelines for solid-state spin defects

26-Apr-2021

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Argonne-led research team highlighted in spec - EurekAlert

The authors of a paper published in the journal Nature Methods have coined the term "NanoNeuro" to describe an emerging discipline that intersects nanoscience and neuroscience. It utilizes nanotechnology to simulate neuronal activity in the brain.

Image Credit: Shutterstock.com/ HaHanna

For over a century, neuroscientists have used glass or metal electrodes to study the activities of neurons in the brain. Given the vast numbers of neurons present in the brain, these methods are limited at best.

Materials at the nanometer scale (10-9 m) have unique properties, many of them recently uncovered by quantum physics. Nanomaterials have many advantages as biosensors and actuators, opening the door to major advances in neuroscience and medicine.

Nanoscience is the study of matter and phenomena at the nanoscale - i.e., of the order of 10-9 meters. In comparison, a single human hair is 60,000 nm thick. The prefix "nano" derives from "nanos", the Greek word for dwarf. The term "nanometer" was first coined by Richard Zsigmondy. He was the first to measure the size of particles using a microscope.

The physical properties of nanoparticles were already being manipulated in the ancient world: in the 4th century A.D. in Rome, the makers of the Lycurgus Cup used gold particles (perhaps not knowing they were doing so) to fashion glass which changes its color as light passes through it.

Yet, it wasn't until Nobel physicist Richard Feynman's lecture at Caltech that the concept of manipulating matter at the atomic level began to be considered. Several yearslater, Norio Taniguchi coined the term "nanotechnology" to describe semiconductor processes occurring at the nanoscale level.

The workings of the human brain itself have equally fascinated humans. Yet, despite the many developments in neuroscience, many questions, including what causes consciousness and what causes neurological diseases such as Alzheimer's, remain unanswered.

Nanotechnology is poised to help researchers and scientists answer many of these questions.

Freud had hoped to base psychology on the understanding of neural events inside the brain. However, techniques for studying the brain at the physiological level were limited, and there is still a long way to go to simulate brain activity at the neuron level.

Advancements in this area would help us understand the functioning of the brain and treat neurological diseases.

The authors of the Nature Methods paper describe NanoNeuro as the application of nanomaterials - nanoprobes and nanoelectrodes to neuroscience. These nanomaterials will help us investigate neural circuitry at incredibly small scales. It is exploiting the same processes which have reduced computers from the size of a hangar to the size of a chip in a smartphone.

Materials such as carbon nanotubes and graphene have unique chemical, thermal and mechanical properties. At the quantum scale, they exhibit exotic properties and entirely new functionalities.

Plasmonic nanoparticles possess unique optical properties that can be manipulated through their shape and size. They could be used to fire neurons with high degrees of precision.

Quantum dots are nanoparticles that fluoresce under an electric field. This fluorescence can be modulated with the strength of the electric field and reveal the activities of individual neurons. They could replace fluorescent dyes currently used in medical imaging.

Upconverting nanoparticles convert low-energy electrons into high-energy electrons. Researchers have succeeded in making mice see infrared colors by injecting these particles into their retina.

Since the human body is almost completely unharmed by magnetic fields, magnetic nanoparticles could be embedded into brain tissue to modulate neuronal activity.

Nanotechnology is a promising technology for the 21st century. It has the ability to convert neuroscience theory into useful applications by observing, manipulating and controlling matter at the nanometer scale. It offers the possibility of probing neural activity at the sub-cellular level, significantly improving our understanding of critical brain functions.

Garcia-Etxarri, A., et. Al. (2021) Time for NanoNeuro. [Online] Nature Methods.Available at: https://doi.org/10.1038/s41592-021-01270-9

Disclaimer: The views expressed here are those of the author expressed in their private capacity and do not necessarily represent the views of AZoM.com Limited T/A AZoNetwork the owner and operator of this website. This disclaimer forms part of the Terms and conditions of use of this website.

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NanoNeuro: The Intersection of Nanoscience and Neuroscience - AZoNano

Mahdi Sanei was born on April 21, 1993 in the city of Isfahan. Also boost your business. Mahdi Sanei was known as an advertising consultant from 2011 to 2014, and he was active in advertising and branding consulting.

Because Mahdi Sanei started his activity in the same field, namely graphics and advertising, in fact, Mahdi was first a graphic designer and then got acquainted with the web field by starting his activity in the UI and UX sections. After several years of activity in the field of web design, Mahdi is attracted to the world of cyber security, programming and begins to study and study this part as much as he can, and now as an activist in the field of cyber security in the network application layer Be focused and active.

But why did Mahdi Sanei become so popular and popular?

Mahdi Sanei, after gaining technical experience as well as studying in a field related to his work, decided to establish a brand, a brand called TechGo.

After the establishment of TechGo, Mahdi Sanei was able to take big steps in this direction by attracting young and motivated forces and focusing on the idea of technology and digital.

It may be interesting to know that TechGo is generally made up of people under the age of 25 and mostly works remotely because Mahdi Sanei believed that digital work space and technology have removed physical limitations, so first to attract young people and trust it. He started and then, by creating aspirations among these young people, he was able to offer high quality and low cost to his customers, which made this name more colorful among all the competitors of Mahdi Sanei Company than ever before.

Why then did TechGo and Mahdi Sanei come up so much?

The question is correct, we must say that Mahdi was able to attract the trust of customers by combining the ideas of young people whom he had trusted one day and also providing very accurate and detailed services.

This brand was so obsessive and precise that its customers became addicted to He was re-collaborating, many secrets of how they work and the profit they make are still hidden, but what is clear is that Mahdi Sanei with the TechGo brand and his professional team has been able to be very attractive and most of the business To attract Asian online companies.

Read a part of Mahdi Saneis recently published interview in this article to get to know him better.

Mr. Sanei, where did you start and why technology?

I first started with graphic design and my interest was in media design, then I became interested in advertising and started studying and reviewing it, which made me familiar with the different parts of the digital world,

for example, my web design. I became acquainted and after trying to explore deeper layers, I was attracted to programming and the world of cyber security.

Those who are in this field know that digital science and technology are so vast and new that every day new events and ideas for There is discovery .

Mahdi Sanei has a brand, right?

This brand was formed; Want to tell the story?

In fact, we worked with different teams in different digital disciplines, and that led us to the conclusion of establishing TechGo,

TechGo is a brand that includes various teams of technology and digital sciences, which includes support and production of content in the context of social media to cyber security and even hardware. Of course, we are considering many other areas that are not yet active and developing the team. We are our own expert and technician.

We attract interns and staff from all over the world who work remotely and remotely. TechGo has a detailed identity and ideal that you will hear more about in the future.

How do you think those who aim for a digital world should start on this path? You see, the most important thing I think was focusing on one branch, you can hardly focus if you are interested in technology, and from our point of view this is a bug in your system,

So first they have to set a goal and then focus on just the branch of technology they have chosen.

This is my best suggestion. How does he see the future of the world in this regard?

I think the next century belongs to the quantum world, the combination of the digital world and the world of physics and quantum reveals to us certain dimensions of science that we have not yet achieved.

Lets get away from work, tell us about your personal life, where do you live and how do you go about your daily life?

(He says with a laugh) I am constantly traveling because of my job because of the meetings I have to attend and this has made me not have a fixed place, my daily life is with my colleagues and friends.

It is really the best pleasure for me to discover new events in It is technology

And for this reason, I have generally chosen those around me in a way that my life has the color and smell of technology and digital.

It seems that TechGo is a big tree that we will hear a lot of news about its growth in the future, so remember the names of Mahdi Sanei and TechGo.

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Mahdi Sanei, A Digital Technology Activist And Leading Entrepreneur In This Field, Forecast The Future Of Technology By Combining Artificial...

The central principle of superconductivity is that electrons form pairs. But can they also condense into foursomes? Recent findings have suggested they can, and a physicist at KTH Royal Institute of Technology today published the first experimental evidence of this quadrupling effect and the mechanism by which this state of matter occurs.

Reporting in Nature Physics, Professor Egor Babaev and collaborators presented evidence of fermion quadrupling in a series of experimental measurements on the iron-based material, Ba1xKxFe2As2. The results follow nearly 20 years after Babaev first predicted this kind of phenomenon, and eight years after he published a paper predicting that it could occur in the material.

The pairing of electrons enables the quantum state of superconductivity, a zero-resistance state of conductivity which is used in MRI scanners and quantum computing. It occurs within a material as a result of two electrons bonding rather than repelling each other, as they would in a vacuum. The phenomenon was first described in a theory by, Leon Cooper, John Bardeen and John Schrieffer, whose work was awarded the Nobel Prize in 1972.

The iron-based superconductor material, Ba1xKxFe2As2, is mounted for experimental measurements. Credit: Vadim Grinenko, Federico Caglieris

So-called Cooper pairs are basically opposites that attract. Normally two electrons, which are negatively-charged subatomic particles, would strongly repel each other. But at low temperatures in a crystal they become loosely bound in pairs, giving rise to a robust long-range order. Currents of electron pairs no longer scatter from defects and obstacles and a conductor can lose all electrical resistance, becoming a new state of matter: a superconductor.

Only in recent years has the theoretical idea of four-fermion condensates become broadly accepted.

For a fermion quadrupling state to occur there has to be something that prevents condensation of pairs and prevents their flow without resistance, while allowing condensation of four-electron composites, Babaev says.

The Bardeen-Cooper-Schrieffer theory didnt allow for such behavior, so when Babaevs experimental collaborator at Technische Universtt Dresden, Vadim Grinenko, found in 2018 the first signs of a fermion quadrupling condensate, it challenged years of prevalent scientific agreement.

What followed was three years of experimentation and investigation at labs at multiple institutions in order to validate the finding.

Babaev says that key among the observations made is that fermionic quadruple condensates spontaneously break time-reversal symmetry. In physics time-reversal symmetry is a mathematical operation of replacing the expression for time with its negative in formulas or equations so that they describe an event in which time runs backward or all the motions are reversed.

If one inverts time direction, the fundamental laws of physics still hold. That also holds for typical superconductors: if the arrow of time is reversed, a typical superconductor would still be the same superconducting state.

However, in the case of a four-fermion condensate that we report, the time reversal puts it in a different state, he says.

It will probably take many years of research to fully understand this state, he says. The experiments open up a number of new questions, revealing a number of other unusual properties associated with its reaction to thermal gradients, magnetic fields and ultrasound that still have to be better understood.

Reference: State with spontaneously broken time-reversal symmetry above the superconducting phase transition by Vadim Grinenko, Daniel Weston, Federico Caglieris, Christoph Wuttke, Christian Hess, Tino Gottschall, Ilaria Maccari, Denis Gorbunov, Sergei Zherlitsyn, Jochen Wosnitza, Andreas Rydh, Kunihiro Kihou, Chul-Ho Lee, Rajib Sarkar, Shanu Dengre, Julien Garaud, Aliaksei Charnukha, Ruben Hhne, Kornelius Nielsch, Bernd Bchner, Hans-Henning Klauss and Egor Babaev, 18 October 2021, Nature Physics.DOI: 10.1038/s41567-021-01350-9

Contributing to the research were scientists from the following institutions: Institute for Solid State and Materials Physics, TU Dresden, Germany; Leibniz Institute for Solid State and Materials Research, Dresden; Stockhom University; Bergische Universtt at Wuppertal, Germany; Dresden High Magnetic Field Laboratory (HLD-EMFL); Wurzburg-Dresden Cluster of Excellence ct.qmat, Germany; Helmholtz-Zentrum, Germany; National Institute of Advanced Industrial Science and Technology (AIST), Japan; Institut Denis Poisson, France.

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Physics Experiment Reveals Formation of a New State of Matter Breaks Time-Reversal Symmetry - SciTechDaily

The Big Bang or the massive expansion of things that happened 14 billion years ago. Many believe that this is the origin of the universe. Hard to Imagine Without the Big Bang, would there still be a universe that gave birth to the earth and humans like us?

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Most recently, a physicist at the University of Liverpool in the UK. Using sophisticated concepts such as quantum gravity (QG), the universe proves the possibility of being as we have always seen. There is no beginning or big bang as it is understood. Or if the Big Bang is real, its a aftermath.

This unusual idea equates to renewing ancient beliefs in some cultures that the universe is eternal without origin and will never die.

Dr. Bruno Pento, a physicist, is studying the nature of time at the University of Liverpool. The author of the above research said that arXiv.org, now published in the online educational archive, has developed a new theory within the framework of quantum gravity. Named Causal Theory

The new theory assumes that space-time can be divided into smaller and smaller units, which will eventually be indivisible units based on space-time. Like the atoms of elements, this basic time-space can be used to find the universe or the beginning of the universe.

NASAAccording to the theory of relativity the gap is woven together into a continuous piece.

The causal theory was developed from the concept of quantum gravity. Such quantum concepts can explain physics problems at the particle level. Einsteins general theory of relativity cannot be explained. Singular (singular), or including the gravitational problem at the smallest point of infinite density. They are found only at the onset of black holes and eruptions.

Dr. Without the continuous weaving of a fabric as we imagine the universe and the real world today. The opportunity for two events to follow each other when and where. Will be limited immediately

A new perspective on such a gap is like looking through a magnifying glass on your computer screen. This will result in an enlarged image that is immediately separated from the rest of the screen. Unlike the naked eye, all screenshots are linked together.

Dr. Pento also explains that the synthesis theory of causation considers that the course of time is characterized by detailed and distinctive physical features. Rather than being an abstract or illusory.

Under this ideological framework, the universe is only a fundamental unit of expansion of space-time.

Such a theory is mathematically possible. It means that the origin or the Big Bang is not a prerequisite for the existence of the universe. There must have been something long before the Big Bang happened.

Our study shows that this is an infinitely long and infinite past. The Big Bang did not begin. It is only a step in the evolution of the universe, Dr. Pento concluded.

News BBCThailand Published on the website New news This is a collaboration between two news organizations.

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Quantum Gravity Theory Renewing Ancient Concepts "Universe Without Beginning" - New News - The Press Stories

Physicists from the University of Colorado have created an atomic clock so precise it can measure gravitational time dilation over distances as small as one millimeter.

This record-breaking measurement could have implications reaching as far as redefining exactly how long a second is or discovering where all the dark matter in our universe is hiding.

Up front: Einstein figured out that time functions differently depending on how close to a gravity well the observer is. So, for instance, if youre standing on the Earth wearing a watch itll run a tad bit slower than if youre out in space.

This phenomenon is known as gravitational time dilation. Weve observed it in our solar system in reference to the sun, and more recently out in deep space in a double-star system.

On Earth, the previous record for smallest observation of gravitational time dilation ever measured was about 33 centimeters.

The Colorado team observed time dilation across an atomic clock stacked only a single millimeter high, thus blowing the old record away.

Background: The way the team accomplished such a feat was incredible. In essence, they arranged 100,000 atoms along a sort of scaffold that allowed them to stagger across an entire millimeters distance. No small feat at the atomic scale.

Then the team hit the atoms with beams of light tuned to specific frequencies to cause a reaction. At different heights away from the Earth, the atoms reacted either slower or faster. This demonstrated time dilation at the smallest scale weve seen so far.

Why it matters: The ability to accurately measure time cuts to the core of our species ability to explore the cosmos.

We dont have spaceships that can zip us out at light speed to explore the furthest reaches of space. We have telescopes and sensors.

Understanding the universe requires observation of whats happening over vast distances of space and time. After all, were not really seeing the stars twinkle in real time: were observing beams of light that have potentially traveled for millions of years.

Per the teams pre-print paper, building a better atomic clock has massive implications:

Ultimately, clocks will study the union of general relativity and quantum mechanics once they become sensitive to the finite wavefunction of quantum objects oscillating in curved spacetime.

Quick take: Better measurements lead to better results. And in this case, were closing in on one of the most fundamentally important events in human history: the unification of classical physics and quantum mechanics.

Arguably, closing the measurement of time from distances as huge as a millimeter down to the atomic, subatomic, and quantum scales could be the lynchpin which binds a single, overarching theory of everything together.

This would be huge, but its also a long shot based on where the research is today. Luckily, there are closer targets for atomic clock technology that could also revolutionize our understanding of the universe, namely: dark matter.

Many of Einsteins theories and those being explored by modern theoretical physicists hinge upon the existence of so-called dark matter. This mysterious substance supposedly makes up more than 85% of the entire universe, but we cant seem to find it anywhere.

And thats because its currently undetectable. When we look for dark matter were not trying to point a telescope at it. Were conducting measurements on everything but dark matter in hopes of painting its silhouette with math as a method for revealing it.

The more precise we are at determining how events at extreme distances unfold over time, the more likely well be able to accurately identify what were looking at or not looking at, as the case may be.

As with any pre-print research, its worth waiting for peer review before we start shouting eureka from the rooftops. But, if this all adds up, this research could be some of the most exciting stuff weve seen in the physics world all year.

H/t: Emily Conover, ScienceNews

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How atomic time-travel could reveal the mysteries of dark matter and more - The Next Web

image:The iron-based superconductor material, Ba1xKxFe2As2, is mounted for experimental measurements. view more

Credit: Vadim Grinenko, Federico Caglieris

The central principle of superconductivity is that electrons form pairs. But can they also condense into foursomes? Recent findings have suggested they can, and a physicist at KTH Royal Institute of Technology today published the first experimental evidence of this quadrupling effect and the mechanism by which this state of matter occurs.

Reporting today in Nature Physics, Professor Egor Babaev and collaborators presented evidence of fermion quadrupling in a series of experimental measurements on the iron-based material, Ba1xKxFe2As2. The results follow nearly 20 years after Babaev first predicted this kind of phenomenon, and eight years after he published a paper predicting that it could occur in the material.

The pairing of electrons enables the quantum state of superconductivity, a zero-resistance state of conductivity which is used in MRI scanners and quantum computing. It occurs within a material as a result of two electrons bonding rather than repelling each other, as they would in a vacuum. The phenomenon was first described in a theory by, Leon Cooper, John Bardeen and John Schrieffer, whose work was awarded the Nobel Prize in 1972.

So-called Cooper pairs are basically opposites that attract. Normally two electrons, which are negatively-charged subatomic particles, would strongly repel each other. But at low temperatures in a crystal they become loosely bound in pairs, giving rise to a robust long-range order. Currents of electron pairs no longer scatter from defects and obstacles and a conductor can lose all electrical resistance, becoming a new state of matter: a superconductor.

Only in recent years has the theoretical idea of four-fermion condensates become broadly accepted.

For a fermion quadrupling state to occur there has to be something that prevents condensation of pairs and prevents their flow without resistance, while allowing condensation of four-electron composites, Babaev says.

The Bardeen-Cooper-Schrieffer theory didnt allow for such behavior, so when Babaevs experimental collaborator at Technische Universtt Dresden, Vadim Grinenko, found in 2018 the first signs of a fermion quadrupling condensate, it challenged years of prevalent scientific agreement.

What followed was three years of experimentation and investigation at labs at multiple institutions in order to validate the finding.

Babaev says that key among the observations made is that fermionic quadruple condensates spontaneously break time-reversal symmetry. In physics time-reversal symmetry is a mathematical operation of replacing the expression for time with its negative in formulas or equations so that they describe an event in which time runs backward or all the motions are reversed.

If one inverts time direction, the fundamental laws of physics still hold. That also holds for typical superconductors: if the arrow of time is reversed, a typical superconductor would still be the same superconducting state.

However, in the case of a four-fermion condensate that we report, the time reversal puts it in a different state, he says.

It will probably take many years of research to fully understand this state," he says. "The experiments open up a number of new questions, revealing a number of other unusual properties associated with its reaction to thermal gradients, magnetic fields and ultrasound that still have to be better understood.

Contributing to the research were scientists from the following institutions: Institute for Solid State and Materials Physics, TU Dresden, Germany; Leibniz Institute for Solid State and Materials Research, Dresden; Stockhom University; Bergische Universtt at Wuppertal, Germany; Dresden High Magnetic Field Laboratory (HLD-EMFL); Wurzburg-Dresden Cluster of Excellence ct.qmat, Germany; Helmholtz-Zentrum, Germany; National Institute of Advanced Industrial Science and Technology (AIST), Japan; Institut Denis Poisson, France.

Experimental study

Not applicable

'State with spontaneously broken time-reversal symmetry above the superconducting phase transition

18-Oct-2021

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Experiments reveal formation of a new state of matterelectron quadruplets - EurekAlert