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Title
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Tackling fluctuation corrections in the BEC/BCS crossover at nonzero temperatures
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Author
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Abstract
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| The investigation of superfluid atomic Fermi gases in the regime of strong interactions is conveniently investigated with the path-integral method at temperature zero, or at the critical temperature where the gap vanishes, by taking particle-pair or hole-pair fluctuations into account. Here, we also take the particle-hole excitations into account, which is important to investigate intermediate temperatures. The additional terms in the fluctuation propagator are identified, and a contour integral representation is used to calculate the contribution of these terms to the free energy and to the density of noncondensed fermions. |
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Language
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English
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Source (book)
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Path integrals: new trends and perspectives: proceedings of the 9th International Conference on Path Integrals, September 23-28, 2007, Dresden, Germany / Janke, W. [edit.]; et al. [edit.]
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Publication
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Singapore
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World Scientific
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2008
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ISBN
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978-981-283-726-4
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DOI
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10.1142/9789812837271_0051
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Volume/pages
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p. 361-367
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ISI
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000264341000051
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Full text (Publisher's DOI)
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