Publication of Jochen W. Schmidt

Haussmann, Werner; Jetter, Kurt; Reimer, Manfred

doi:10.1007/978-3-0348-8272-9_21

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Introduction1

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2009

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“…At finite temperature, the most important questions are the calculation of the thermodynamic potential and in particular the location of the phase transition boundary T C (ξ) as a function of ξ; see Ref. [11] and references therein. Up to now, these problems have not been amenable to analytic solutions; our most reliable knowledge of those quantities comes from Monte Carlo simulations [13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Universal properties of the ultracold Fermi gas

2009

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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 h͑ , ͒, where =−͑k F a s ͒ −1 and = T / T F . The function h͑ , ͒ 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 ␦͑ , ͒ and the molecular fraction f c ͑ , ͒ in the closed channel can be expressed in terms of h͑ , ͒ and thus have identical temperature dependence. The conclusions should have testable consequences in future experiments.

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Section: Introductionmentioning

confidence: 99%