Optical excitations in a non-ideal Bose gas

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dc.creatorOktel, M. O.
dc.creatorLevitov, L. S.
dc.date1998-12-14
dc.date.accessioned2026-07-07T09:31:46Z
dc.date.available2026-07-07T09:31:46Z
dc.descriptionOptical excitations in a Bose gas are demonstrated to be very sensitive to many-body effects. At low temperature the momentum relaxation is provided by momentum exchange collisions, rather than by elastic collisions. A collective excitation mode forms, which in a Boltzmann gas is manifest in a collision shift and dramatic narrowing of spectral lines. In the BEC state, each spectral line splits into two components. The doubling of the optical excitations results from the physics analogous to that of the second sound. We present a theory of the line doubling, and calculate the oscillator strengths and linewidth.
dc.description5 pages, 3 eps figures
dc.identifierhttps://arxiv.org/abs/cond-mat/9812217
dc.identifierhttp://arxiv.org/abs/cond-mat/9812217
dc.identifierPhys. Rev. Lett. 83, 6-9 (1999)
dc.identifierdoi:10.1103/PhysRevLett.83.6
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/158577
dc.subjectCondensed Matter
dc.subjectAtomic Physics
dc.titleOptical excitations in a non-ideal Bose gas
dc.typetext

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