Lorentz-Lorenz shift in a Bose-Einstein condensate

Preprint

30 September 1997

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9701088

Abstract

We study the quantum field theory of light-matter interactions for quantum degenerate atomic gases at low light intensity. We argue that the contact interactions between atoms emerging in the dipole gauge may be ignored. Specifically, they are canceled by concurrent infinite level shifts of the atoms. Our development yields the classic Lorentz-Lorenz local-field shift of the atomic resonance.

Keywords

EINSTEIN CONDENSATE
LORENTZ LORENZ
BOSE EINSTEIN
QUANTUM FIELD
INTERACTIONS
LORENZ SHIFT
ATOMS

All Related Versions

Version 1, 1997-01-14, ArXiv
Version 2, 1997-09-30, ArXiv
Published version: Physical Review A, 56 (3), 2056.

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