Pairing in Asymmetric Many-Fermion Systems: Functional Renormalisation Group Approach
Quantum Gases
2015-06-22 v2 Superconductivity
Nuclear Theory
Abstract
Functional renormalisation group approach is applied to a imbalanced many- fermion system with a short-range attractive force. Composite boson field is introduced to describe the pairing between different flavour fermions. A set of approximate flow equations for the effective couplings is derived and solved. We identify the critical values of mass and particle number density mismatch when the system undergoes a phase transition to a normal state and determine the phase diagram both at unitary regime and nearby.
Cite
@article{arxiv.1407.5438,
title = {Pairing in Asymmetric Many-Fermion Systems: Functional Renormalisation Group Approach},
author = {Boris Krippa},
journal= {arXiv preprint arXiv:1407.5438},
year = {2015}
}
Comments
some discussion and references added