Exact renormalization group and many-fermion systems
High Energy Physics - Phenomenology
2009-11-10 v1 Superconductivity
Nuclear Theory
Abstract
The exact renormalization group methods is applied to many fermion systems with short-range attractive force. The strength of the attractive fermion-fermion interaction is determined from the vacuum scattering length. A set of approximate flow equations is derived including fermionic and bosonic fluctuations. The numerical solutions show a phase transition to a gapped phase. The inclusion of bosonic fluctuations is found to be significant only in the small-gap regime.
Cite
@article{arxiv.hep-ph/0407118,
title = {Exact renormalization group and many-fermion systems},
author = {B. Krippa and M. C. Birse and J. A. McGovern and N. R. Walet},
journal= {arXiv preprint arXiv:hep-ph/0407118},
year = {2009}
}
Comments
Talk, given by B. Krippa on the International Workshop "Meson2004", Cracow, Poland, 3 pages