Fermion

Quick meaning: Fermion is a noun meaning (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;.

Meaning

(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;.

More Meanings

1. 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.

Example Sentences

It is not known whether the Higgs mechanism is the true source for the masses of the fundamental fermions.

The fermions treated by the Standard Model are the (composite) baryons and the (elementary) leptons and quarks.

A remarkable feature of lattice regularization is the appearance of several fermion species per fermion field in the lattice action.

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.

Word Forms

• fermions

Related Words

Related dictionary entries include massless, pseudofermion, parafermion, sfermion, boson, fermionization.

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