Nonlocal quantum fluctuations and fermionic superfluidity in the imbalanced attractive hubbard model

Research output: Contribution to journalArticle

Researchers

Research units

  • Gwangju Institute of Science and Technology
  • Swiss Federal Institute of Technology Zurich

Abstract

We study fermionic superfluidity in strongly anisotropic optical lattices with attractive interactions utilizing the cluster dynamical mean-field theory method, and focusing in particular on the role of nonlocal quantum fluctuations. We show that nonlocal quantum fluctuations impact the BCS superfluid transition dramatically. Moreover, we show that exotic superfluid states with a delicate order parameter structure, such as the Fulde-Ferrell-Larkin-Ovchinnikov phase driven by spin population imbalance, can emerge even in the presence of such strong fluctuations.

Details

Original languageEnglish
Article number185301
Pages (from-to)1-5
Number of pages5
JournalPhysical Review Letters
Volume113
Issue number18
Publication statusPublished - 30 Oct 2014
MoE publication typeA1 Journal article-refereed

    Research areas

  • cluster DMFT, Hubbard model, quantum gases, superfluidity

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