Tanizaki, Y. and Fejős, Gergely and Hatsuda, T. (2014) Functional renormalization group approach to conventional theory of superfluidity and beyond. JOURNAL OF PHYSICS-CONFERENCE SERIES, 529 (1). ISSN 1742-6588
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Abstract
Fermionic functional renormalization group (FRG) is applied to describe the superfluid phase transition of the two-component fermionic system with attractive contact interaction. Connection between the fermionic FRG approach and the Bardeen-Cooper- Schrieffer (BCS) theory with its Gorkov and Melik-Barkhudarov (GMB) correction is made clear, and the FRG flow of the fermion self-energy is also studied to go beyond the BCS+GMB theory. The superfluid transition temperature and the associated chemical potential are calculated in the region of the negative scattering length using fermionic FRG. © Published under licence by IOP Publishing Ltd.
| Item Type: | Article |
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| Uncontrolled Keywords: | PHYSICS; Statistical mechanics; Contact interaction; Functional renormalization group; Conventional theory; Two-component; Superfluid phase; Superfluid transition temperature; Negative scattering length; Fermionic systems; |
| Subjects: | Q Science / természettudomány > QC Physics / fizika |
| SWORD Depositor: | MTMT SWORD |
| Depositing User: | MTMT SWORD |
| Date Deposited: | 10 Apr 2024 14:21 |
| Last Modified: | 10 Apr 2024 14:21 |
| URI: | https://real.mtak.hu/id/eprint/192281 |
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