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Open Quantum Systems Decoherence Quantum Chemistry

Capturing the Feshbach-induced Pairing Physics in the BEC-BCS Crossover

arXiv
Authors: Eloisa Cuestas, José I. Robledo, Ana P. Majtey

Year

2020

Paper ID

22064

Status

Preprint

Abstract Read

~2 min

Abstract Words

98

Citations

N/A

Abstract

By including the effect of a trap with characteristic energy given by the Fermi temperature TF in a two-body two-channel model for Feshbach resonances, we reproduce the experimental closed-channel fraction Z across the BEC-BCS crossover and into the BCS regime of a 6Li atomic Fermi gas. We obtain the expected behavior Z propto sqrt{TF} at unitarity, together with the recently measured proportionality constant. Our results are also in agreement with recent measurements of the Z dependency on TF on the BCS side, where a significant discrepancy between experiments and theory has been repeatedly reported.

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  • By including the effect of a trap with characteristic energy given by the Fermi temperature TF in a two-body two-channel model for Feshbach resonances, we reproduce the...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2007.10901 [2] arXiv https://arxiv.org/abs/2007.10901 [3] Publisher https://arxiv.org/abs/2007.10901

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