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Second sound in Fermi gases at the BCS-BEC crossover | H. Heiselberg
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3 Sep 2004 | Subject: | Superconductivity | cond-mat.supr-con | Abstract: | The thermodynamic potential is calculated for a uniform superfluid gas of fermi atoms from the mean field BCS equations including corrections from induced interactions, Hartree-Fock energies and quasiparticle selfenergies. The entropy, specific heat and sound modes are calculated as function of temperature, density and interaction strength from the BCS to the unitarity limit and around the BCS-BEC crossover. The second sound speed is of particular interest as it is a clear signal of a superfluid component and it determines the critical temperature. | Source: | arXiv, cond-mat/0409077 | Services: | Forum | Review | PDF | Favorites |
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