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

Tomio Koyama

doi:10.1063/1.2354612

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

Tomio Koyama

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	LOW TEMPERATURE PHYSICS
Subtitle of host publication	24th International Conference on Low Temperature Physics - LT24
Pages	77-78
Number of pages	2
DOIs	https://doi.org/10.1063/1.2354612
Publication status	Published - 2006
Externally published	Yes
Event	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States Duration: 2006 Aug 10 → 2006 Oct 17

Publication series

Name	AIP Conference Proceedings
Volume	850
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
Country/Territory	United States
City	Orlando, FL
Period	06/8/10 → 06/10/17

Keywords

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

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.2354612

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Koyama, T 2006, One-loop correction to the mean field theory for the neutral BCS superconductors. in LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24. AIP Conference Proceedings, vol. 850, pp. 77-78, LOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24, Orlando, FL, United States, 06/8/10. https://doi.org/10.1063/1.2354612

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year = "2006",

doi = "10.1063/1.2354612",

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series = "AIP Conference Proceedings",

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AB - 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.

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

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Keywords

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