Feshbach resonance in dense ultracold Fermi gases

Preprint

11 February 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0302209

Abstract

We propose a coherent framework allowing to deal with many-body effects in dense ultracold Fermi gases in the presence of a Feshbach resonance. We show that the simple effect of Pauli exclusion induces a strong modification of the basic scattering properties, leading in particular to an energy dependence of the effective scattering length on the scale of the chemical potential. This results in a smearing of the Feshbach resonance and provides a natural explanation for recent experimental findings.

Keywords

DENSE ULTRACOLD FERMI
ULTRACOLD FERMI GASES
EFFECTIVE SCATTERING
FESHBACH RESONANCE
SCATTERING

All Related Versions

Version 1, 2003-02-11, ArXiv
Published version: Physical Review Letters, 91 (12), 120401.

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