The structure of the ground superfluid state in a gas of Fermi atoms near the Feshbach resonance

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dc.creatorKagan, Yu.
dc.creatorMaksimov, L. A.
dc.date2005-09-20
dc.date.accessioned2026-07-07T06:18:26Z
dc.date.available2026-07-07T06:18:26Z
dc.descriptionWithin the framework of the variational approach the ground state is studied in a gas of Fermi atoms near the Feshbach resonance at negative scattering length. The structure of the originating superfluid state is formed by two coherently bound subsystems. One subsystem is that of quasi molecules in the closed channel and the other is a system of pairs of atoms in the open channel. The set of equations derived allows us to describe the properties of the ground state at an arbitrary magnitude of the parameters. In particular, it allows one to find a gap in the spectrum of single-particle Fermi excitations and sound velocity characterizing a branch of collective Bose excitations.
dc.description6 pages
dc.identifierhttps://arxiv.org/abs/cond-mat/0509525
dc.identifierhttp://arxiv.org/abs/cond-mat/0509525
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/94736
dc.subjectOther Condensed Matter
dc.titleThe structure of the ground superfluid state in a gas of Fermi atoms near the Feshbach resonance
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