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Article: Universal properties of the ultracold Fermi gas
Title | Universal properties of the ultracold Fermi gas |
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Authors | |
Issue Date | 2009 |
Publisher | American 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, article no. 023601 How to Cite? |
Abstract | We 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 Identifier | http://hdl.handle.net/10722/206542 |
ISSN | 2014 Impact Factor: 2.808 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Zhang, S | - |
dc.contributor.author | Leggett, AJ | - |
dc.date.accessioned | 2014-11-19T03:35:49Z | - |
dc.date.available | 2014-11-19T03:35:49Z | - |
dc.date.issued | 2009 | - |
dc.identifier.citation | Physical Review A (Atomic, Molecular and Optical Physics), 2009, v. 79 n. 2, article no. 023601 | - |
dc.identifier.issn | 1050-2947 | - |
dc.identifier.uri | http://hdl.handle.net/10722/206542 | - |
dc.description.abstract | We 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.language | eng | - |
dc.publisher | American Physical Society. The Journal's web site is located at http://pra.aps.org | - |
dc.relation.ispartof | Physical Review A (Atomic, Molecular and Optical Physics) | - |
dc.rights | Copyright 2009 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevA.79.023601 | - |
dc.title | Universal properties of the ultracold Fermi gas | en_US |
dc.type | Article | en_US |
dc.identifier.email | Zhang, S: shizhong@hku.hk | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1103/PhysRevA.79.023601 | - |
dc.identifier.scopus | eid_2-s2.0-59949085844 | - |
dc.identifier.volume | 79 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | article no. 023601 | - |
dc.identifier.epage | article no. 023601 | - |
dc.identifier.isi | WOS:000263815000115 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 1050-2947 | - |