How large is "large $N_c$" for Nuclear matter?
Nuclear Theory
2015-05-20 v1 High Energy Physics - Phenomenology
Abstract
We argue that a so far neglected dimensionless scale, the number of neighbors in a closely packed system, is relevant for the convergence of the large expansion at high chemical potential. It is only when the number of colors is large w.r.t. this new scale () that a convergent large limit is reached. This provides an explanation as to why the large expansion, qualitatively successful in in vacuum QCD, fails to describe high baryo-chemical potential systems, such as nuclear matter. It also means that phenomenological claims about high density matter based on large extrapolations should be treated with caution.
Cite
@article{arxiv.1101.0149,
title = {How large is "large $N_c$" for Nuclear matter?},
author = {Giorgio Torrieri and Igor Mishustin},
journal= {arXiv preprint arXiv:1101.0149},
year = {2015}
}
Comments
Proceedings of CPOD2010 conference, in Dubna. Results based on Phys.Rev.C82, 055202 (2010), http://arxiv.org/abs/1006.2471