fermi-dirac statistics

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Definition of fermi-dirac statistics in English English dictionary

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Fermi-Dirac statistics

In quantum mechanics, one of two possible ways (the other being Bose-Einstein statistics) in which a system of indistinguishable particles can be distributed among a set of energy states. Each available discrete state can be occupied by only one particle. This exclusiveness accounts for the structure of atoms, in which electrons remain in separate states rather than collapsing into a common state. It also accounts for some aspects of electrical conductivity. This theory of statistical behaviour was developed first by Enrico Fermi and then by P.A.M. Dirac (1926-27). The statistics apply only to particles such as electrons that have half-integer values of spin; the particles are called fermions

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)

Hyphenation

fermi-dirac sta-tis-tics