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Finite-size effects in the two-dimensional BCS-BEC crossover

Authors :
Lanaro, M.
Bighin, G.
Dell'Anna, L.
Salasnich, L.
Source :
Phys. Rev. B 109, 104511 (2024)
Publication Year :
2024

Abstract

We study the finite-size effects on the BCS-BEC crossover in two dimensions, occurring in confined fermionic superfluids. We analyze several thermodynamic properties, such as the chemical potential, the energy gap and the superfluid density, taking into account unavoidable quantum fluctuations, and, by means of renormalization group procedure, we detect the putative Berezinskii-Kosterlitz-Thouless phase transition at finite-size.<br />Comment: 8 pages, 5 figures, accepted for publication in Physical Review B as an article

Details

Database :
arXiv
Journal :
Phys. Rev. B 109, 104511 (2024)
Publication Type :
Report
Accession number :
edsarx.2401.06054
Document Type :
Working Paper
Full Text :
https://doi.org/10.1103/PhysRevB.109.104511