fermion
English
Etymology
From Fermi + -on, after Italian-American physicist Enrico Fermi. Coined by English physicist Paul Dirac in 1945 in a lecture titled "Developments in Atomic Theory".
Pronunciation
Noun
fermion (plural fermions)
- (particle physics, 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;
(slightly more loosely) any such particle or any composite particle composed of fermions.- 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.
- 1994, István Montvay, Gernot Münster, Quantum Fields on a Lattice, Cambridge University Press, page 208,
- A remarkable feature of lattice regularization is the appearance of several fermion species per fermion field in the lattice action.
- 1996, Georges Bouzerar, Didier Poilblanc, Persistent Currents in Interacting Electronic Systems, T. Martin, G. Montambaux, J. Trân Thanh Vân (editors), Correlated Fermions and Transport in Mesoscopic Systems, Editions Frontieres, page 149,
- 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, Georg G. Raffelt, Stars as Laboratories for Fundamental Physics, University of Chicago Press, page 253,
- It is not known whether the Higgs mechanism is the true source for the masses of the fundamental fermions.
Coordinate terms
- boson (particle with integer spin)
Derived terms
Translations
particle with totally antisymmetric composite quantum states
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See also
Further reading
Pauli exclusion principle on Wikipedia.Wikipedia
Fermi–Dirac statistics on Wikipedia.Wikipedia
Spin–statistics theorem on Wikipedia.Wikipedia
Standard Model on Wikipedia.Wikipedia
Dutch
Etymology
From Enrico Fermi (Italian-American physicist) + -on.
Pronunciation
Audio: (file) - Hyphenation: fer‧mi‧on
Noun
fermion n (plural fermionen)
Esperanto
Noun
fermion
- accusative singular of fermio
French
Pronunciation
Noun
fermion m (plural fermions)
Indonesian
Etymology
Noun
fermion (first-person possessive fermionku, second-person possessive fermionmu, third-person possessive fermionnya)
Polish
Pronunciation
Noun
fermion m inan
Declension
Declension of fermion
singular | plural | |
---|---|---|
nominative | fermion | fermiony |
genitive | fermionu | fermionów |
dative | fermionowi | fermionom |
accusative | fermion | fermiony |
instrumental | fermionem | fermionami |
locative | fermionie | fermionach |
vocative | fermionie | fermiony |
Derived terms
Further reading
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