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An overview of Fermi-Dirac and Bose-Einstein distributions in the context of quantum gas. It discusses the relation between these distributions and the Boltzmann distribution, the application of Fermi-Dirac distribution in modelling conduction electrons in metals, and the concept of degenerate Fermi gas. The document also includes formulas for calculating occupancy using Boltzmann distribution and wavefunctions for free electrons in a metal block.
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condition is not met: N >>^1 Z For cases when Fermi-Dirac Distribution (fermions) • Bose-Einstein Distribution (bosons) •
kT )/ μ ε −(
kT μ)/ε −(
μ and ε Consider cases looking at •
kT )/ μ ε −(
μ and ε Consider cases looking at •
Modelling behavior of conduction electrons in metal •
=0, Fermi-Dirac distribution becomes step function T At • =0) T (μ≡^ F ε – are occupied and those above^ F ε When nearly all states below • are empty
Electrons in the system are free particles •