Fermi-Dirac statistics


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Fer·mi-Di·rac statistics

 (fĕr′mē-dĭ-răk′)
n. (used with a sing. verb)
The statistics used in statistical mechanics to describe the behavior of large numbers of fermions.

[After Enrico Fermi and Paul Adrien Maurice Dirac, who developed the statistics.]

Fermi-Dirac statistics

n
(General Physics) physics the branch of quantum statistics used to calculate the permitted energy arrangements of the particles in a system in terms of the exclusion principle. Compare Bose-Einstein statistics
[C20: named after Enrico Fermi and Paul Dirac]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Fermi-Dirac statistics - (physics) law obeyed by a systems of particles whose wave function changes when two particles are interchanged (the Pauli exclusion principle applies)
law of nature, law - a generalization that describes recurring facts or events in nature; "the laws of thermodynamics"
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
References in periodicals archive ?
In order for superconductivity to occur, the fermions (particles that follow Fermi-Dirac statistics) must pair up.
Hence, the purpose of the current study, as a demonstration of the utility of [C.sub.c], is to renormalize and compare three physically significant energy distributions in statistical physics: the energy probability density functions for systems governed by Boltzmann, Bose-Einstein, and Fermi-Dirac statistics.
Quantum Fermi-Dirac statistics. Young and in future outstanding Italian physicist Enrico Fermi (19011954) awarded in 1938 the Nobel Prize in physics for their discovery of artificial radioactivity, chemical elements, caused by the bombing of them by <<slow>> neutrons, in 1925 regardless of when also the young and also in future the outstanding British theoretical physicist Paul Dirac in the future (1902-1984) which became in 1933 for the discovery of new productive forms of atomic theory (for the creation of quantum mechanics) the Nobel Prize in physics [3] developed a quantum statistics for microparticles with half-integer spin (such as electrons, protons, neutrons, and other representatives of the microcosm of matter) [7].
The most final-state particles are fermions, and the Fermi-Dirac statistics is expected to be the most appropriate description for single source.
Hence, if there is a problem with the Fermi-Dirac statistics of the [[DELTA].sup.++] then the same problem exists with [[DELTA].sup.+] and [[DELTA].sup.0].
The method is based on an iterative and self-consistent solution of the charge neutrality equation with full Fermi-Dirac statistics for the carriers at finite temperature and on the use of statistical analyses to give analytic expressions that represent the calculated data sets.
Dirac (see 1930) also contributed, so that the result is known as the Fermi-Dirac statistics. All particles subject to these statistics, like the proton and electron, are called fermions in honor of Fermi.