Последние посты
The Physics Times
18 окт. 2023 г., 19:30
#PhysicsNEWS ➖@Phytimes➖ Researchers use measurements to generate quantum entanglement and teleportation Quantum mechanics is full of weird phenomena, but perhaps none as weird as the role measurement plays in the theory. Since a measurement tends to destroy the "quantumness" of a system, it seems to be the mysterious link between the quantum and classical world. And in a large system of quantum bits of information, known as "qubits," the effect of measurements can induce dramatically new behavior, even driving the emergence of entirely new phases of quantum information. ➖@Phytimes➖phys.orgResearchers use measurements to generate quantum entanglement and teleportationQuantum mechanics is full of weird phenomena, but perhaps none as weird as the role measurement plays in the theory. Since a measurement tends to destroy the "quantumness" of a system, it seems to be ...1,950Открыть в TelegramThe Physics Times
9 июн. 2023 г., 17:46
#PhysicsNEWS ➖@Phytimes➖ Research takes first steps towards realizing mechanical qubits Quantum information (QI) processing may be the next game changer in the evolution of technology, by providing unprecedented computational capabilities, security and detection sensitivities. Qubits, the basic hardware element for quantum information, are the building block for quantum computers and quantum information processing, but there is still much debate on which types of qubits are actually the best. ➖@Phytimes➖phys.orgResearch takes first steps towards realizing mechanical qubitsQuantum information (QI) processing may be the next game changer in the evolution of technology, by providing unprecedented computational capabilities, security and detection sensitivities. Qubits, the ...1,750Открыть в TelegramThe Physics Times
2 мар. 2023 г., 22:07
#PhysicsNEWS ➖@Phytimes➖ Confirming the theory behind the formation of planets, stars and black holes The first laboratory realization of the long-standing but never-before confirmed theory of the puzzling formation of planets, stars and supermassive black holes by swirling surrounding matter has been produced at PPPL. This breakthrough confirmation caps more than 20 years of experiments at PPPL, the national laboratory devoted to the study of plasma science and fusion energy. ➖@Phytimes➖phys.orgConfirming the theory behind the formation of planets, stars and black holesThe first laboratory realization of the long-standing but never-before confirmed theory of the puzzling formation of planets, stars and supermassive black holes by swirling surrounding matter has been ...The Physics Times
30 нояб. 2022 г., 16:02
BREAKING: Physicists have built a wormhole and successfully sent information from one end to the other. https://www.quantamagazine.org/physicists-create-a-wormhole-using-a-quantum-computer-20221130/Quanta MagazinePhysicists Create a Holographic Wormhole Using a Quantum ComputerThe unprecedented experiment explores the possibility that space-time somehow emerges from quantum information, even as the work’s interpretation remains disputed.The Physics Times
15 нояб. 2022 г., 19:19
🪐 Introducing Galactica. A large language model for science.Can summarize academic literature, solve math problems, generate Wiki articles, write scientific code, annotate molecules and proteins, and more.Explore and get weights: galactica.orgThe Physics Times
20 окт. 2022 г., 16:15
переслано из @science
The 2022 Nobel Prize in Physics has been awarded to three scientists for their work in pioneering quantum information science. Alain Aspect, John F. Clauser and Anton Zeilinger all conducted some of the first experiments with entangled photons, enabling a future for commercial quantum computers.
The Physics Times
3 мар. 2022 г., 21:23
#PhysicsNEWS ➖@Phytimes➖ Dark energy: Neutron stars will tell us if it's only an illusion A huge amount of mysterious dark energy is necessary to explain cosmological phenomena, such as the accelerated expansion of the Universe, using Einstein's theory. But what if dark energy was just an illusion and general relativity itself had to be modified? A new SISSA study, published in Physical Review Letters, offers a new approach to answer this question. Thanks to huge computational and mathematical effort, scientists produced the first simulation ever of merging binary neutron stars in theories beyond general relativity that reproduce a dark-energy like behavior on cosmological scales. This allows the comparison of Einstein's theory and modified versions of it, and, with sufficiently accurate data, may solve the dark energy mystery. ➖@Phytimes➖phys.orgDark energy: Neutron stars will tell us if it's only an illusionA huge amount of mysterious dark energy is necessary to explain cosmological phenomena, such as the accelerated expansion of the Universe, using Einstein's theory. But what if dark energy was just an ...The Physics Times
8 февр. 2022 г., 17:13
#PhysicsNEWS ➖@Phytimes➖ Using the universe's coldest material to measure the world's tiniest magnetic fields Magnetometers measure the direction, strength or relative changes of magnetic fields, at a specific point in space and time. Employed in many research areas, magnetometers can help doctors to see the brain through medical imaging, or archaeologists to reveal underground treasures without excavating the ground. ➖@Phytimes➖phys.orgUsing the universe's coldest material to measure the world's tiniest magnetic fieldsMagnetometers measure the direction, strength or relative changes of magnetic fields, at a specific point in space and time. Employed in many research areas, magnetometers can help doctors to see the ...The Physics Times
6 февр. 2022 г., 17:10
#PhysicsNEWS ➖@Phytimes➖ Scientists discover a surprising structural change in metal oxide at low temperature When water boils, it converts into another phase, steam. Such transitions are commonplace in nature and frequently studied in scientific laboratories. ➖@Phytimes➖phys.orgScientists discover a surprising structural change in metal oxide at low temperatureWhen water boils, it converts into another phase, steam. Such transitions are commonplace in nature and frequently studied in scientific laboratories.The Physics Times
1 февр. 2022 г., 10:23
#PhysicsNEWS ➖@Phytimes➖ Scientists uncover how the shape of melting ice depends on water temperature A team of mathematicians and physicists has discovered how ice formations are shaped by external forces, such as water temperature. Its newly published research may offer another means for gauging factors that cause ice to melt. ➖@Phytimes➖phys.orgScientists uncover how the shape of melting ice depends on water temperatureA team of mathematicians and physicists has discovered how ice formations are shaped by external forces, such as water temperature. Its newly published research may offer another means for gauging factors ...The Physics Times
31 янв. 2022 г., 05:10
#PhysicsNEWS ➖@Phytimes➖ Crunching multiverse to solve two physics puzzles at once The discovery of the Higgs boson was a landmark in the history of physics. It explained something fundamental: how elementary particles that have mass get their masses. But it also marked something no less fundamental: the beginning of an era of measuring in detail the particle's properties and finding out what they might reveal about the nature of the universe. ➖@Phytimes➖phys.orgCrunching multiverse to solve two physics puzzles at onceThe discovery of the Higgs boson was a landmark in the history of physics. It explained something fundamental: how elementary particles that have mass get their masses. But it also marked something no ...The Physics Times
30 янв. 2022 г., 08:48
#PhysicsNEWS ➖@Phytimes➖ Studying cosmic expansion using methods from many-body physics It is almost always assumed in cosmological calculations that there is a even distribution of matter in the universe. This is because the calculations would be much too complicated if the position of every single star were to be included. In reality, the universe is not uniform: in some places there are stars and planets, in others there is just a void. Physicists Michael te Vrugt and Prof. Raphael Wittkowski from the Institute of Theoretical Physics and the Center for Soft Nanoscience (SoN) at the University of Münster have, together with physicist Dr. Sabine Hossenfelder from the Frankfurt Institute for Advanced Studies (FIAS), developed a new model for this problem. Their starting point was the Mori-Zwanzig formalism, a method for describing systems consisting of a large number of particles with aphys.orgStudying cosmic expansion using methods from many-body physicsIt is almost always assumed in cosmological calculations that there is a even distribution of matter in the universe. This is because the calculations would be much too complicated if the position of ...The Physics Times
28 янв. 2022 г., 07:58
#PhysicsNEWS ➖@Phytimes➖ When light loses symmetry, it can hold particles Optical tweezers use light to immobilize microscopic particles as small as a single atom in 3D space. The basic principle behind optical tweezers is the momentum transfer between light and the object being held. Analogous to the water pushing on a dam that blocks the stream, light pushes onto and attracts objects that make the light bend. This so-called optical force can be designed to point to a certain point in space, where a particle will be held. In fact, the optical trapping technique has so far won two Nobel Prizes, one in 1997 for holding and cooling down single atoms, a second in 2018 for offering biologists a tool to study single biomolecules such as DNA and proteins. ➖@Phytimes➖phys.orgWhen light loses symmetry, it can hold particlesOptical tweezers use light to immobilize microscopic particles as small as a single atom in 3D space. The basic principle behind optical tweezers is the momentum transfer between light and the object ...The Physics Times
24 янв. 2022 г., 14:06
#PhysicsNEWS ➖@Phytimes➖ First detection of exotic 'X' particles in quark-gluon plasma In the first millionths of a second after the Big Bang, the universe was a roiling, trillion-degree plasma of quarks and gluons—elementary particles that briefly glommed together in countless combinations before cooling and settling into more stable configurations to make the neutrons and protons of ordinary matter. ➖@Phytimes➖phys.orgFirst detection of exotic 'X' particles in quark-gluon plasmaIn the first millionths of a second after the Big Bang, the universe was a roiling, trillion-degree plasma of quarks and gluons—elementary particles that briefly glommed together in countless combinations ...The Physics Times
20 янв. 2022 г., 20:08
#PhysicsNEWS ➖@Phytimes➖ Study finds that black hole inner horizons can be charged or discharged Black holes are intriguing and widely studied cosmic bodies with extremely high tidal forces, from which even light is unable to escape. While many studies predicted the existence of black holes, which have also recently been detected, many questions about these cosmic bodies remain unanswered. ➖@Phytimes➖phys.orgStudy finds that black hole inner horizons can be charged or dischargedBlack holes are intriguing and widely studied cosmic bodies with extremely high tidal forces, from which even light is unable to escape. While many studies predicted the existence of black holes, which ...The Physics Times
17 янв. 2022 г., 08:40
#PhysicsNEWS ➖@Phytimes➖ Using time dilation to measure curvature of space-time A team of researchers working at Stanford University has used time dilation in an atomic fountain to measure the curvature of space-time. In their study, reported in the journal Science, the group used the fountain as an interferometer to measure atomic wave packet changes that corresponded to phase shifts. Albert Roura,with the German Aerospace Center's Institute of Quantum Technologies published a Perspective piece in the same journal issue outlining the work by the team in California. ➖@Phytimes➖phys.orgUsing time dilation to measure curvature of space-timeA team of researchers working at Stanford University has used time dilation in an atomic fountain to measure the curvature of space-time. In their study, reported in the journal Science, the group used ...The Physics Times
13 янв. 2022 г., 20:23
#PhysicsNEWS ➖@Phytimes➖ New insight into the internal structure of the proton While the Large Hadron Collider (LHC) at CERN is well known for smashing protons together, it is actually the quarks and gluons inside the protons—collectively known as partons—that are really interacting. Thus, in order to predict the rate of a process occurring in the LHC—such as the production of a Higgs boson or a yet-unknown particle—physicists have to understand how partons behave within the proton. This behavior is described in parton distribution functions (PDFs), which describe what fraction of a proton's momentum is taken by its constituent quarks and gluons. ➖@Phytimes➖phys.orgNew insight into the internal structure of the protonWhile the Large Hadron Collider (LHC) at CERN is well known for smashing protons together, it is actually the quarks and gluons inside the protons—collectively known as partons—that are really interacting. ...The Physics Times
10 янв. 2022 г., 18:55
#PhysicsNEWS ➖@Phytimes➖ Manifolds in commonly used atomic fingerprints lead to failure in machine-learning four-body interactions Atomic environment fingerprints, or structural descriptors, are used to describe the chemical environment around a reference atom. Encoding information such as bond-lengths to neighboring atoms or coordination numbers, these fingerprints are used, for example, as inputs in machine learning approaches or to eliminate redundant structures in structural searches ➖@Phytimes➖phys.orgManifolds in commonly used atomic fingerprints lead to failure in machine-learning four-body interactionsAtomic environment fingerprints, or structural descriptors, are used to describe the chemical environment around a reference atom. Encoding information such as bond-lengths to neighboring atoms or coordination ...The Physics Times
7 янв. 2022 г., 07:17
#PhysicsNEWS ➖@Phytimes➖ Terahertz light-driven spin-lattice control: A new potential path to faster and more efficient data storage An international team of researchers from the University of Cologne (Germany), Radboud University Nijmegen (The Netherlands), the Ioffe Institute and the Prokhorov General Physics Institute (Russia) has discovered a new mechanism to control spin-lattice interaction using ultrashort terahertz (THz) pulses (terahertz means 1012 hertz). This mechanism can open up new and elegant ways to control propagation of spin waves and thus make an important step to conceptually new technologies of data processing in future. The results have been published in Science. ➖@Phytimes➖phys.orgTerahertz light-driven spin-lattice control: A new potential path to faster and more efficient data storageAn international team of researchers from the University of Cologne (Germany), Radboud University Nijmegen (The Netherlands), the Ioffe Institute and the Prokhorov General Physics Institute (Russia) has ...The Physics Times
5 янв. 2022 г., 17:44
#PhysicsNEWS ➖@Phytimes➖ Matter and antimatter seem to respond equally to gravity As part of an experiment to measure—to an extremely precise degree—the charge-to-mass ratios of protons and antiprotons, the RIKEN-led BASE collaboration at CERN, Geneva, Switzerland, has found that, within the uncertainty of the experiment, matter and antimatter respond to gravity in the same way. ➖@Phytimes➖phys.orgMatter and antimatter seem to respond equally to gravityAs part of an experiment to measure—to an extremely precise degree—the charge-to-mass ratios of protons and antiprotons, the RIKEN-led BASE collaboration at CERN, Geneva, Switzerland, has found that, ...
