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Pseudogap pairing in ultracold fermi atoms

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posted on 2024-07-11, 07:34 authored by Hui HuHui Hu, Xiaji LiuXiaji Liu, Peter DrummondPeter Drummond, Hui Dong
The Bose-Einstein condensate to Bardeen-Cooper-Schrieffer crossover in ultracold Fermi gases creates an ideal environment to enrich our knowledge of many-body systems. It is relevant to a wide range of fields from condensed matter to astrophysics. The nature of pairing in strongly interacting Fermi gases can be readily studied. This aids our understanding of related problems in high-Tc superconductors, whose mechanism is still under debate due to the large interaction parameter. Here, we calculate the dynamical properties of a normal, trapped strongly correlated Fermi gas, by developing a quantum cluster expansion. Our calculations for the single-particle spectral function agree with recent rf spectroscopy measurements, and clearly demonstrate pseudogap pairing in the strongly interacting regime.

Funding

ARC | DP0984522

ARC | DP0984637

History

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ISSN

0031-9007

Journal title

Physical Review Letters

Volume

104

Issue

24

Article number

paper no. 240407

Pagination

240407-

Publisher

American Physical Society

Copyright statement

Copyright © 2010 The American Physical Society. The published version is reproduced with the permission of the publisher for non-commercial purposes only.

Language

eng

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