Fermi gas
E57419
A Fermi gas is a quantum many-particle system composed of fermions that obey Fermi–Dirac statistics, often used to model electrons in metals, neutrons in neutron stars, and ultracold atomic gases.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Fermi gas canonical | 1 |
| Fermi gas model | 1 |
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
ideal quantum gas
ⓘ
quantum many-body system ⓘ theoretical physics model ⓘ |
| applicableTo |
electrons in a metal conduction band
ⓘ
neutron matter in neutron stars (approximation) ⓘ nucleons in atomic nuclei (approximation) ⓘ trapped ultracold fermionic atoms ⓘ |
| assumes |
indistinguishable fermions
ⓘ
occupation numbers 0 or 1 per state ⓘ |
| characterizedBy |
Fermi energy
ⓘ
Fermi momentum ⓘ Fermi temperature ⓘ |
| composedOf | fermions ⓘ |
| contrastedWith |
Bose gas
ⓘ
surface form:
Bose–Einstein gas
|
| describedIn | statistical mechanics ⓘ |
| equationOfStateDependsOn |
particle density
ⓘ
spin degeneracy ⓘ temperature ⓘ |
| hasDistributionFunction |
Fermi–Dirac statistics
ⓘ
surface form:
Fermi–Dirac distribution
|
| hasProperty |
at most one fermion per single-particle quantum state
ⓘ
particles obey Pauli exclusion principle ⓘ pressure persists at zero temperature ⓘ quantum degeneracy at low temperature ⓘ supports Fermi pressure ⓘ |
| hasVariant |
degenerate Fermi gas
ⓘ
ideal Fermi gas ⓘ interacting Fermi gas ⓘ non-interacting Fermi gas ⓘ relativistic Fermi gas ⓘ spin-polarized Fermi gas ⓘ |
| limitCase | classical ideal gas at high temperature and low density ⓘ |
| namedAfter | Enrico Fermi ⓘ |
| obeys | Fermi–Dirac statistics ⓘ |
| relatedToConcept |
Bose gas
ⓘ
Fermi liquid ⓘ Fermi surface ⓘ Pauli exclusion principle ⓘ degeneracy pressure ⓘ quantum degeneracy ⓘ |
| temperatureRegime | quantum effects dominate below Fermi temperature ⓘ |
| usedIn |
astrophysics
ⓘ
cold atom physics ⓘ condensed matter physics ⓘ nuclear physics ⓘ |
| usedToExplain |
electronic heat capacity of metals
ⓘ
stability of white dwarfs and neutron stars via degeneracy pressure ⓘ |
| usedToModel |
electrons in metals
ⓘ
neutrons in neutron stars ⓘ ultracold atomic gases ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Fermi gas model