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

被引：34

作者：

Ruostekoski, J ^{[1
]}

机构：

[1] Univ Ulm, Abt Quantenphys, D-89069 Ulm, Germany

来源：

PHYSICAL REVIEW A | 1999年 / 60卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.60.R1775

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 spin levels increases the optical linewidth and line shift of a quantum degenerate Fermi-Dirac gas already at very low densities and introduces a collisional local-field shift that may dramatically dominate the Lorentz-Lorenz shift. These optical properties could possibly signal the presence of the superfluid state and determine the value of the BCS order parameter. [S1050-2947(99)50509-X].

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页码：R1775 / R1778

页数：4

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