Comparative study of the finite-temperature thermodynamics of a unitary Fermi gas

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dc.creatorQin, Fang
dc.creatorChen, Ji-sheng
dc.date2009-04-01
dc.date.accessioned2026-07-07T13:07:48Z
dc.date.available2026-07-07T13:07:48Z
dc.descriptionWe study the finite-temperature thermodynamics of a unitary Fermi gas. The chemical potential, energy density and entropy are given analytically with the quasi-linear approximation. The ground state energy agrees with previous theoretical and experimental results. Recently, the generalized exclusion statistics is applied to the discussion of the finite-temperature unitary Fermi gas thermodynamics. A concrete comparison between the two different approaches is performed. Emphasis is made on the behavior of the entropy per particle. In physics, the slope of entropy gives the information for the effective fermion mass $m^*/m$ in the low temperature strong degenerate region. Compared with $m^*/m \approx 0.70<1$ given in terms of the generalized exclusion statistics, our quasi-linear approximation determines $m^*/m\approx 1.11>1$.
dc.description7 pages; accepted for publication in Phys. Rev. A
dc.identifierhttps://arxiv.org/abs/0904.0053
dc.identifierhttp://arxiv.org/abs/0904.0053
dc.identifierPhys.Rev.A79:043625,2009
dc.identifierdoi:10.1103/PhysRevA.79.043625
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/228212
dc.subjectQuantum Gases
dc.subjectOther Condensed Matter
dc.titleComparative study of the finite-temperature thermodynamics of a unitary Fermi gas
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