Strong-Coupling Theory for a Non-equilibrium Unitary Fermi Gas

T. Kawamura, D. Kagamihara, R. Hanai, Y. Ohashi

Research output: Contribution to journalArticle

Abstract

We study a non-equilibrium unitary Fermi gas, being coupled with two baths with different values of chemical potential. Extending a T-matrix approximation developed in equilibrium Fermi gases to the non-equilibrium steady state by using the Keldysh Green’s function technique, we examine the superfluid phase transition out of equilibrium. We also clarify non-equilibrium effects on the pseudogap phenomenon by strong pairing fluctuations.

Original languageEnglish
Pages (from-to)41-48
Number of pages8
JournalJournal of Low Temperature Physics
Volume201
Issue number1-2
DOIs
Publication statusPublished - 2020 Oct 1

Keywords

  • Keldysh Green’s function
  • Non-equilibrium strong-coupling state
  • T-matrix approximation
  • Unitary Fermi gas

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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