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Speed of sound in an optical lattice - MaRDI portal

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Speed of sound in an optical lattice

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Publication:3018313

DOI10.1002/ANDP.201000085zbMATH Open1221.82096arXiv1006.1392OpenAlexW2147631684MaRDI QIDQ3018313

Author name not available (Why is that?)

Publication date: 21 July 2011

Published in: (Search for Journal in Brave)

Abstract: A system of equal mixture of 6Li atomic Fermi gas of two hyperfine states loaded into a cubic three-dimensional optical lattice is studied assuming a negative scattering length (BCS side of the Feshbach resonance). When the interaction is attractive, fermionic atoms can pair and form a superfluid. The dispersion of the phonon-like mode and the speed of sound in the long-wavelength limit are obtained by solving the Bethe-Salpeter equations for the collective modes of the attractive Hubbard Hamiltonian.


Full work available at URL: https://arxiv.org/abs/1006.1392



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