Optical response of superfluid state in dilute atomic Fermi-Dirac gases

Details Optical response of superfluid state in dilute atomic Fermi-Dirac gases Optical response of superfluid state in dilute atomic Fermi-Dirac gases

1999-02-24

arxiv.org/abs/cond-mat/9902324v1

Phys. Rev. A 60 (1999) R1775

Physics

Condensed Matter

Statistical Mechanics

5 pages, 2 figures

Scientific paper

10.1103/PhysRevA.60.R1775

We theoretically study the propagation of light in a Fermi-Dirac gas in the presence of a superfluid state. BCS pairing between atoms in different hyperfine levels may significantly increase the optical linewidth and line shift of a quantum degenerate Fermi-Dirac gas and introduce a local-field correction that, under certain conditions, dramatically dominates over the Lorentz-Lorenz shift. These optical properties could possibly unambiguously sign the presence of the superfluid state and determine the value of the BCS order parameter.

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