Large Amplitude Dynamics of the Pairing Correlations in a Unitary Fermi Gas

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dc.creatorBulgac, Aurel
dc.creatorYoon, Sukjin
dc.date2008-12-18
dc.date2009-02-25
dc.date.accessioned2026-07-07T12:46:06Z
dc.date.available2026-07-07T12:46:06Z
dc.descriptionA unitary Fermi gas has a surprisingly rich spectrum of large amplitude modes of the pairing field alone, which defies a description within a formalism involving only a reduced set of degrees of freedom, such as quantum hydrodynamics or a Landau-Ginzburg-like description. These modes are very slow, with oscillation frequencies well below the pairing gap, which makes their damping through quasiparticle excitations quite ineffective. In atomic traps these modes couple naturally with the density oscillations, and the corresponding oscillations of the atomic cloud are an example of a new type of collective mode in superfluid Fermi systems. They have lower frequencies than the compressional collective hydrodynamic oscillations, have a non-spherical momentum distribution, and could be excited by a quick time variation of the scattering length.
dc.description4 pages, 3 figures, published version, updated figures and a number of changes
dc.identifierhttps://arxiv.org/abs/0812.3643
dc.identifierhttp://arxiv.org/abs/0812.3643
dc.identifierPhys. Rev. Lett. 102, 085302 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.085302
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/221268
dc.subjectStatistical Mechanics
dc.subjectSuperconductivity
dc.subjectNuclear Theory
dc.titleLarge Amplitude Dynamics of the Pairing Correlations in a Unitary Fermi Gas
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