Convergence of a renormalization group approach to dimer-dimer scattering
Quantum Gases
2011-08-04 v1 Nuclear Theory
Atomic Physics
Abstract
We study the convergence of a functional renormalisation group technique by looking at the ratio between the fermion-fermion scattering length and the dimer-dimer scattering length for a system of nonrelativistic fermions. We find that in a systematic expansion in powers of the fields there is a rapid convergence of the result that agrees with know exact results.
Keywords
Cite
@article{arxiv.1011.5852,
title = {Convergence of a renormalization group approach to dimer-dimer scattering},
author = {Michael C. Birse and Boris Krippa and Niels R. Walet},
journal= {arXiv preprint arXiv:1011.5852},
year = {2011}
}