Articles tagged with Fermions
Researchers have identified a new class of one-dimensional particles, dubbed anyons, which exhibit properties between bosons and fermions. The discovery opens up new possibilities for investigating fundamental physics in realistic experimental settings.
Researchers at Heidelberg University developed a new theoretical framework that connects two fundamental domains of modern quantum physics, describing the emergence of quasiparticles in systems with both mobile and static impurities. The new theory explains how quasiparticles form even in systems with extremely heavy impurities.
Theoretical physicists at MIT propose that under certain conditions, magnetic material’s electrons could form quasiparticles called “anyons” that can flow together without friction. If confirmed, it would introduce a new form of superconductivity persisting in the presence of magnetism.
Researchers at Johannes Gutenberg University Mainz receive EUR 180,000 to study ultracold neutrons and detect a 'forbidden' muon decay, key experiments in modern particle physics, with implications for the Standard Model and potential new physics discoveries.
Researchers at MIT have captured the first images of individual atoms freely interacting in space, visualizing never-before-seen quantum phenomena. The technique allows scientists to directly observe correlations among 'bosons' and fermions, shedding light on their behavior and interactions.
Researchers at Microsoft Quantum Lab West Lafayette advanced complex layered materials for topological quantum computing. The team accurately measured the state of quasi particles, a crucial step towards realizing a topological quantum computer.
Rice scientists Kaden Hazzard and Zhiyuan Wang mathematically demonstrate the potential existence of paraparticles that have long been thought impossible. Their study shows that these particles can exhibit strange behavior when exchanging positions with other particles.
A HKUST-led team has successfully simulated the non-Hermitian skin effect in two dimensions using ultracold fermions. This breakthrough demonstrates a significant advance in quantum physics research and opens up avenues for exploring high-dimensional non-Hermitian phenomena.
A team of scientists led by Qimiao Si predicts the existence of flat electronic bands at the Fermi level, which could enhance electron interactions and create new quantum phases. These bands have the potential to enable new applications in quantum bits, qubits, and spintronics.
Researchers at Purdue University have discovered a new type of emergent particle, the six-flux composite fermion, which explains rare quantum states in host materials. This discovery expands our understanding of topological electron physics and has significant implications for the ordering of known fractional quantum Hall states.
Researchers visualize second sound, a wave-like movement of heat, independent of physical particle motion in a superfluid. The findings expand understanding of heat flow in superconductors and neutron stars.
Rice physicists find that a 'strange metal' quantum material exhibits greatly suppressed shot noise, suggesting unconventional charge transport mechanisms. The study provides direct empirical evidence for the idea that electricity may flow through strange metals in an unusual liquidlike form.
Researchers at OIST have developed a quantum engine that uses the principles of quantum mechanics to create power, replacing traditional fuel-based methods. The engine's efficiency can reach up to 25% and has potential applications in devices such as batteries and sensors.
Researchers have designed a new type of quantum computer that uses fermionic atoms to simulate complex physical systems. The processor can efficiently simulate fermionic models in a hardware-efficient manner using fermionic gates, making it ideal for simulating systems where fermionic statistics play a crucial role.
Researchers at MIT have taken the first direct images of fermion pairs in a cloud of atoms, shedding light on how electrons form superconducting pairs that glide through materials without friction. The observations provide a visual blueprint for how electrons may pair up in superconducting materials.
The prize recognizes the duo's discovery that topology can classify compounds, similar to the Periodic Table. They have predicted and designed thousands of new topological compounds and experimented with many of these.
The team isolated pairs of atoms within a 3D optical lattice to measure the strength of their mutual interaction. They confirmed a longstanding prediction that the p-wave force between particles reached its maximum theoretical limit.
Researchers apply two techniques to device, finding states suggestive of Majoranas but absent with alternative strategy. This paradox reveals imposter quasi-particles deceiving measurement strategies individually.
Scientists at Swinburne University of Technology and FLEET collaborators observe and explain signatures of Fermi polaron interactions in atomically-thin WS2 using ultrafast spectroscopy. Repulsive forces arise from phase-space filling, while attractive forces lead to cooperatively bound exciton-exciton-electron states.
Researchers use lasers to cool atoms to absolute zero, revealing new phenomena in an unexplored realm of quantum magnetism. The creation of SU(N) matter opens a gateway to understanding the behavior of materials and potentially leading to novel properties.
Researchers at Dartmouth have built the world's first superfluid circuit using pairs of ultracold electron-like atoms, allowing for controlled exploration of exotic materials like superconductors. The circuit enables analysis of electron movement in highly controllable settings.
A team of US and Chinese researchers has directly measured how individual electronic quantum states in a kagome magnet respond to external magnetic fields, shifting energy in an unusual manner. They found that Dirac fermions exhibit momentum-dependent shifts under the applied field.
Physicists at MIT have discovered a new type of qubit, where vibrating pairs of fermions can exist in two states at the same time. The qubits can maintain this state for up to 10 seconds, making them a promising foundation for quantum computers.
Researchers at Brown University have discovered a new type of strange metal behavior in bosonic Cooper pair materials, challenging traditional electrical rules. This discovery may help explain high-temperature superconductivity and its potential applications.
A new technique by Phasecraft reduces quantum hardware resources needed to simulate fermions like electrons, bringing material simulation closer to reality. The compact representation outperforms previous methods, improving memory use and algorithm size.
Researchers have developed a new method to discover Weyl semimetals with S4 symmetry, allowing for high-throughput screening. The approach uses a novel topological invariant that can be calculated efficiently using the one-dimensional Wilson-loop method.
Physicists at Princeton University have observed quantum oscillation in an insulator, a phenomenon typically seen in metals. The discovery hints at the existence of neutral fermions and challenges the long-held distinction between metals and insulators.
MIT physicists create a perfect fluid in the laboratory, capturing its sound waves to measure viscosity. The results confirm that strongly interacting fermion gas behaves as a perfect fluid, with properties applicable to studying neutron stars and the early universe's plasma.
The discovery of Brown-Zak fermions in graphene-based superlattices offers a new perspective for electronic devices operating under extreme conditions. The high mobility of these quasiparticles allows them to travel long distances without scattering, making them suitable for ultra-high frequency transistors.
Scientists at the University of Tokyo have successfully demonstrated a method to switch a novel material between two different nonvolatile states at very high speeds and with great accuracy. This breakthrough finding has potential applications in creating high-speed memory devices that are also energy-efficient.
Researchers discovered that bosons can transform into fermions when constrained to a one-dimensional gas, enabling new insights for quantum devices and computers. This breakthrough could provide a method for dynamically switching between bosonic and fermionic systems to meet military needs.
In one dimension, bosons can form a Fermi sea similar to non-interacting fermions, but still exhibit bosonic velocity distribution. This phenomenon demonstrates the complex behavior of ultracold gases in optical lattices and has implications for quantum devices and systems
Researchers at Max Planck Institute for Chemical Physics of Solids spot axion particles in correlated Weyl semimetal (TaSe2I) below -11 °C. The discovery reveals novel properties of axion particles, which can conduct electrical current in a distinct manner from electrons.
Researchers at Paul Scherrer Institute successfully prove existence of Weyl fermions in a paramagnetic material with slow magnetic fluctuations, expanding possibilities for spintronics and future electronics. This discovery could lead to more efficient transportation of information, potentially revolutionizing computer technology.
Physicists at ETH Zurich have created acoustic metamaterials that interact differently with Weyl fermions of opposite chirality, a crucial aspect of particle physics. This discovery enables the manipulation of chiral channels, giving independent access to these particles in bulk systems.
Physicists at University of Warsaw propose infinite-dimensional symmetry that unifies all four fundamental forces of nature. This scheme anticipates the existence of new particles with unusual properties, potentially present in our surroundings.
Kanazawa University researcher Hajime Moriya shows that the extended Nicolai supersymmetric fermion lattice model breaks supersymmetry and has a strictly positive energy density for any homogeneous ground state. This contradicts previous claims that supersymmetry may be restored in the infinite-volume limit.
Researchers have developed a model explaining electron interactions past the Coulomb threshold in all Dirac materials, enabling better understanding of long-range interactions and potential breakthroughs in low heat dissipation devices. This discovery could lead to faster processor performance with reduced power leakage.
A new study reveals that ultracold paired particles called fermions behave even weirder than expected, flying with unique trajectories carved by spins, momenta, and energies. The researchers predict that fermions can mimic the behavior of bosons, adding new weirdness to the already established particle-wave duality.
Weyl fermions, massless particles similar to light, were discovered in materials with strong electron interaction. They move extremely slowly despite no mass, lending unique properties to these materials.
Researchers have developed a device using graphene that could provide conclusive evidence for the existence of non-Abelian anyons, a key component of topological quantum computing. The device achieves extremely low disorder and tunability, allowing for the study of these particles in a controlled environment.
Researchers at MIT have measured Weyl fermion chirality using circularly polarized light, exhibiting an electrical current without external voltages. The TaAs metal produces a large current response, making it suitable for sensitive mid-infrared detectors.
Weyl semimetals are predicted to enable ultrafast electronics due to their unique properties. Researchers at MIPT have successfully described the behavior of surface states in these materials using topological field theory.
Researchers extend Luttinger theorem to imbalanced fermion systems, introducing a constraint key to numerical calculations. The constraint preserves the radii of Fermi spheres, enabling separate control over up and down spin populations.
Researchers have created a structure that allows tuning of topological properties, enabling the control of current flow and opening up possibilities for circuits based on topological behaviors. The discovery presents a new artificial crystal lattice structure for studying quantum behaviors.
Researchers have discovered a new type of Weyl semimetal, enabling the study of elusive Weyl fermions. The material, created by combining ARPES and modelling techniques, exhibits unusual transport properties.
An international team predicts several new types of quantum particles in materials, distinguished by intrinsic properties such as responses to magnetic and electric fields. The researchers propose that these fermions can appear in the bulk of materials, enabling a more systematic way to determine whether a system is a protected metal.
Researchers have discovered a magnetic crystal structure that can host Weyl fermions, which are predicted to revolutionize spintronics and quantum computing. The study found two conditions required for the presence of these massless particles in an osmium-based material.
A team of researchers at Princeton University has predicted the existence of a new state of matter where current flows through surface channels resembling an hourglass. The hourglass fermion is created by tuning a property of the material, allowing for efficient transistor switching and potential applications.
A new magnet has been discovered that can control Dirac fermions with zero mass. The researchers found that applying a magnetic field perpendicularly to the layers suppressed conductivity by 1000 percent and confined Dirac electrons, leading to a bulk half-integer quantum Hall effect.
A new type-II Weyl fermion has been predicted to exist in metallic materials, exhibiting unique responses to electromagnetic fields. The discovery could lead to potential applications in low-energy devices and efficient transistors.
A new algorithm for simulating particle interactions in a Fermi sea demonstrates a smooth transition between quasiparticle and bound molecule states. The method may have implications for understanding impurities in various systems, including cold atoms, solid-state systems, and neutron stars.
Scientists at Princeton University have discovered Weyl fermions, a massless particle theorized 85 years ago. The particle could enable nearly free and efficient flow of electricity in electronics, leading to greater power for computers.
Researchers summarize the recent progress on theoretical studies of various 2D Dirac materials, including graphene, silicene, and graphynes. They predict these systems will exhibit half-integer quantum Hall effects and ultrahigh carrier mobility, with potential applications in physics and technology.
Researchers at Perimeter Institute discovered novel states in graphene, a 1-atom-thick material, which exhibits the fractional quantum Hall effect. The discovery opens doors to studying new phenomena and potential applications in quantum computing.
Researchers have successfully detected the Higgs boson decaying directly into fermions, a discovery that confirms theoretical predictions. The analysis of data gathered at the Large Hadron Collider reveals an accumulation of decays near 125 GeV and with a significance of 3.8 sigma.
Researchers have predicted the existence of fermionic matter in a novel one-dimensional liquid state, which cannot be described within existing models. This new state is similar to both fermionic liquids and Tomonaga-Luttinger liquids but has distinct properties that set it apart.
UCSB physicist Tarun Grover has provided mathematical evidence for supersymmetry in a topological superconductor. The research, conducted with colleagues Donna Sheng and Ashvin Vishwanath, appears in the journal Science. Supersymmetry describes a unique relationship between particles, with fermions having boson superpartners.
Researchers at Berkeley Lab have found a new form of quantum matter called a three-dimensional topological Dirac semi-metal (3DTDS) in sodium bismuthate, promising faster transistors and compact hard drives. The discovery features intriguing non-saturating linear magnetoresistance.
Ultra-cold fermions exhibit surprisingly robust collective behavior under specific conditions. By analyzing local collisions, scientists discovered that individual properties team up coherently as a single identity in spin space at very low temperatures.