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

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.

8 pages, 5 figures, accepted for publication in Physical Review B as an article

References in corpus (2)

• Observation of the Berezinskii-Kosterlitz-Thouless Phase Transition in an Ultracold Fermi Gas
• Berezinskii-Kosterlitz-Thouless transition in trapped quasi-two-dimensional Fermi gas near a Feshbach resonance

Cited by in corpus (1)

• Condensate and superfluid fraction of homogeneous Bose gases in a self-consistent Popov approximation