fermion en · NOUN
Pronunciation
- (Southern-England) audio
- /ˈfɜːmɪɒn/
Etymology
From Fermi + -on. Named after Italian-American physicist Enrico Fermi. Coined by English physicist Paul Dirac in 1945 in a lecture titled "Developments in Atomic Theory".
Meanings
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(particle, qualifier:Standard Model) Any elementary or composite particle that has half-integer spin and thus obeys Fermi–Dirac statistics and the Pauli exclusion principle (equivalently, a particle for which the wavefunction of any system of identical such particles changes sign whenever two are swapped); a baryon, a lepton or a quark;
It is not known whether the Higgs mechanism is the true source for the masses of the fundamental fermions.
1996, Georg G. Raffelt, Stars as Laboratories for Fundamental Physics, University of Chicago Press, page 253:According to the spin–statistics theorem, the wavefunction of a system of identical fermions (particles of half-integer spin) is antisymmetric under the operation of swapping any two particles.
For 2D systems, going beyond first order pertu[r]bative calculations, we show that the second harmonic of the current is strongly suppressed in the case of spinless fermion models but significantly enhanced for the Hubbard model.
1996, Georges Bouzerar, Didier Poilblanc, “Persistent Currents in Interacting Electronic Systems”, in T. Martin, G. Montambaux, J. Trân Thanh Vân, editors, Correlated Fermions and Transport in Mesoscopic Systems, Editions Frontieres, page 149:The snapshots were taken by MIT physicists and are the first images that directly capture the pairing of fermions — a major class of particles that includes electrons, as well as protons, neutrons, and certain types of atoms.
2023 July 6, Jennifer Chu, “MIT physicists generate the first snapshots of fermion pairs”, in MIT News:A remarkable feature of lattice regularization is the appearance of several fermion species per fermion field in the lattice action.
1994, István Montvay, Gernot Münster, Quantum Fields on a Lattice, Cambridge University Press, page 208:The fermions treated by the Standard Model are the (composite) baryons and the (elementary) leptons and quarks.
- (particle, qualifier:Standard Model; slightly more loosely) Any elementary or composite particle that has half-integer spin and thus obeys Fermi–Dirac statistics and the Pauli exclusion principle (equivalently, a particle for which the wavefunction of any system of identical such particles changes sign whenever two are swapped); a baryon, a lepton or a quark; (slightly more loosely) any such particle or any composite particle composed of fermions. ▸ any such particle or any composite particle composed of fermions.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| fermions | Number=Plur | lexicographic |
Coordinates
Fermi-Dirac statistics · boson
Deriveds
antifermion · multifermion · heavy fermion · superfermion · fermionize · pseudofermion · fermiophobic · fermionization · fermionic · cofermion · technifermion · fermionically · Dirac fermion · Majorana fermion · sfermion · Weyl fermion · parafermion · difermion · skyrmion
Hyponyms
Relateds
Synonyms
Translations (33)
pt férmion (particle with totally antisymmetric composite quantum states) · sh фермион (particle with totally antisymmetric composite quantum states) · ja フェルミオン (particle with totally antisymmetric composite quantum states) · da fermion (particle with totally antisymmetric composite quantum states) · ru фермио́н (particle with totally antisymmetric composite quantum states) · it fermione (particle with totally antisymmetric composite quantum states) · tr fermiyon (particle with totally antisymmetric composite quantum states) · eo fermiono (particle with totally antisymmetric composite quantum states) · bn ফার্মিয়ন (particle with totally antisymmetric composite quantum states) · fa فرمیون (particle with totally antisymmetric composite quantum states) · pt fermião (particle with totally antisymmetric composite quantum states) · ar فرميون (particle with totally antisymmetric composite quantum states) · ca fermió (particle with totally antisymmetric composite quantum states) · de Fermion (particle with totally antisymmetric composite quantum states) · km ផ្វឺរមីយាណូ (particle with totally antisymmetric composite quantum states) · eu fermioi (particle with totally antisymmetric composite quantum states) · mn фермион (particle with totally antisymmetric composite quantum states) · pl fermion (particle with totally antisymmetric composite quantum states) · sh fermion (particle with totally antisymmetric composite quantum states) · nn fermion (particle with totally antisymmetric composite quantum states) · cmn 费米子 (particle with totally antisymmetric composite quantum states) · nb fermion (particle with totally antisymmetric composite quantum states) · fi fermioni (particle with totally antisymmetric composite quantum states) · sl fermion (particle with totally antisymmetric composite quantum states) · es fermión (particle with totally antisymmetric composite quantum states) · cs fermion (particle with totally antisymmetric composite quantum states) · fr fermion (particle with totally antisymmetric composite quantum states) · io fermiono (particle with totally antisymmetric composite quantum states) · ja フェルミ粒子 (particle with totally antisymmetric composite quantum states) · hy ֆերմիոն (particle with totally antisymmetric composite quantum states) · sv fermion (particle with totally antisymmetric composite quantum states) · hu fermion (particle with totally antisymmetric composite quantum states) · nl fermion (particle with totally antisymmetric composite quantum states)