A new, multi-node FLEET review, published in Matter, investigates the search for Majorana fermions in iron-based superconductors.
Superconductivity
Jun 22, 2022
0
89
A quantum simulator at Rice University is giving physicists a clear look at spin-charge separation, the quantum world's version of the magician's illusion of sawing a person in half.
General Physics
Jun 16, 2022
0
227
Researchers at Dartmouth College have built the world's first superfluid circuit that uses pairs of ultracold electron-like atoms, according to a study published in Physical Review Letters.
General Physics
Apr 19, 2022
0
386
Working with a quantum material known as a kagome magnet, a team of Boston College physicists and colleagues have directly measured how individual electronic quantum states in the novel material respond to external magnetic ...
Condensed Matter
Mar 28, 2022
0
182
Topological charge-entropy scaling relation was proved in the kagome Chern magnet, a kind of magnet predicted to support intrinsic Chern quantum phases, according to a study published on Nature Communications.
Quantum Physics
Mar 14, 2022
0
49
MIT physicists have discovered a new quantum bit, or "qubit," in the form of vibrating pairs of atoms known as fermions. They found that when pairs of fermions are chilled and trapped in an optical lattice, the particles ...
Quantum Physics
Jan 26, 2022
0
1105
A Rice University-led study is forcing physicists to rethink superconductivity in uranium ditelluride, an A-list material in the worldwide race to create fault-tolerant quantum computers.
Superconductivity
Dec 22, 2021
0
913
The hunt is on for leptoquarks, particles beyond the limits of the standard model of particle physics —the best description we have so far of the physics that governs the forces of the Universe and its particles. These ...
Condensed Matter
Dec 10, 2021
0
261
Physicists have created a new ultra-thin, two-layer material with quantum properties that normally require rare earth compounds. This material, which is relatively easy to make and does not contain rare earth metals, could ...
Quantum Physics
Nov 24, 2021
0
1051
Similar to a magnet that always has both south and north poles, a kind of special quasiparticles in condensed matter called "Weyl Fermions" always appear in pairs with opposite chirality. There had been no experimental report ...
Quantum Physics
Sep 14, 2021
1
239
In particle physics, a fermion (named after Enrico Fermi) is any particle which obeys the Fermi–Dirac statistics (and follows the Pauli exclusion principle). Fermions contrast with bosons which obey Bose–Einstein statistics.
A fermion can be an elementary particle, such as the electron; or it can be a composite particle, such as the proton. The spin-statistics theorem holds that, in any reasonable relativistic quantum field theory, particles with integer spin are bosons, while particles with half-integer spin are fermions.
In contrast to bosons, only one fermion can occupy a particular quantum state at any given time. If more than one fermion occupies the same physical space, at least one property of each fermion, such as its spin, must be different. Fermions are usually associated with matter, whereas bosons are generally force carrier particles; although in the current state of quantum physics the distinction between the two concepts is unclear.
The Standard Model recognizes two types of elementary fermions: quarks and leptons. In all, the model distinguishes 24 different fermions: 6 quarks and 6 leptons, each with a corresponding anti-particle.
Composite fermions, such as protons and neutrons, are key building blocks of matter. Weakly interacting fermions can also display bosonic behavior under extreme conditions, such as in superconductivity.
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