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Article: Universal properties of the ultracold Fermi gas

TitleUniversal properties of the ultracold Fermi gas
Authors
Issue Date2009
PublisherAmerican Physical Society. The Journal's web site is located at http://pra.aps.org
Citation
Physical Review A (Atomic, Molecular and Optical Physics), 2009, v. 79 n. 2, p. article no. 023601 How to Cite?
AbstractWe present some general considerations on the properties of a two-component ultracold Fermi gas along the BEC-BCS crossover. It is shown that the interaction energy and the free energy can be written in terms of a single dimensionless function h (ξ,τ), where ξ=- (kF as) -1 and τ=TTF. The function h (ξ,τ) incorporates all the many-body physics and naturally occurs in other physical quantities as well. In particular, we show that the average rf-spectroscopy shift δω ̄ (ξ,τ) and the molecular fraction fc (ξ,τ) in the closed channel can be expressed in terms of h (ξ,τ) and thus have identical temperature dependence. The conclusions should have testable consequences in future experiments.
Persistent Identifierhttp://hdl.handle.net/10722/206542
ISSN
2014 Impact Factor: 2.808
2015 SCImago Journal Rankings: 1.418
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, S-
dc.contributor.authorLeggett, AJ-
dc.date.accessioned2014-11-19T03:35:49Z-
dc.date.available2014-11-19T03:35:49Z-
dc.date.issued2009-
dc.identifier.citationPhysical Review A (Atomic, Molecular and Optical Physics), 2009, v. 79 n. 2, p. article no. 023601-
dc.identifier.issn1050-2947-
dc.identifier.urihttp://hdl.handle.net/10722/206542-
dc.description.abstractWe present some general considerations on the properties of a two-component ultracold Fermi gas along the BEC-BCS crossover. It is shown that the interaction energy and the free energy can be written in terms of a single dimensionless function h (ξ,τ), where ξ=- (kF as) -1 and τ=TTF. The function h (ξ,τ) incorporates all the many-body physics and naturally occurs in other physical quantities as well. In particular, we show that the average rf-spectroscopy shift δω ̄ (ξ,τ) and the molecular fraction fc (ξ,τ) in the closed channel can be expressed in terms of h (ξ,τ) and thus have identical temperature dependence. The conclusions should have testable consequences in future experiments.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://pra.aps.org-
dc.relation.ispartofPhysical Review A (Atomic, Molecular and Optical Physics)-
dc.rightsPhysical Review A (Atomic, Molecular and Optical Physics). Copyright © American Physical Society.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleUniversal properties of the ultracold Fermi gasen_US
dc.typeArticleen_US
dc.identifier.emailZhang, S: shizhong@hku.hk-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevA.79.023601-
dc.identifier.scopuseid_2-s2.0-59949085844-
dc.identifier.volume79-
dc.identifier.issue2-
dc.identifier.spagearticle no. 023601-
dc.identifier.epagearticle no. 023601-
dc.identifier.isiWOS:000263815000115-
dc.publisher.placeUnited States-

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