One-loop correction to the mean field theory for the neutral BCS superconductors

Tomio Koyama

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To investigate the strong coupling effect in neutral BCS superfluids we construct a theory beyond the Hartree-Fock-Bogoliubov approximation, in which the self-energy correction is incorporated into the single-particle fermionic excitations. We consider the self-energy correction arising from the interaction between the Goldstone boson and the fermions. The Ward-Takahashi relations resulting from the U(1) symmetry are systematically utilized to ensure the consistency between the single- and two-particle channels.

Original languageEnglish
Title of host publicationLOW TEMPERATURE PHYSICS
Subtitle of host publication24th International Conference on Low Temperature Physics - LT24
Pages77-78
Number of pages2
DOIs
Publication statusPublished - 2006
Externally publishedYes
EventLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States
Duration: 2006 Aug 102006 Oct 17

Publication series

NameAIP Conference Proceedings
Volume850
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Country/TerritoryUnited States
CityOrlando, FL
Period06/8/1006/10/17

Keywords

  • Degenerate Fermi gas
  • Neutral BCS super-fluid
  • Self-energy correction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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