Analysis of superfluid state of ultracol
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Yusuke Fujihara; Akihisa Koga; Norio Kawakami
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Article
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2010
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Elsevier Science
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English
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We discuss the ground state properties of a Fermi gas with attractive interactions trapped in a twodimensional optical lattice. By making use of the variational Monte Carlo method, we show that the system has an instability toward a density-wave state as well as a superfluid state. We also discuss h