How the Quark Number fluctuates in QCD at small chemical potential
High Energy Physics - Lattice
2011-07-22 v1
Abstract
We discuss the distribution of the quark number over the gauge fields for QCD at nonzero quark chemical potential. As the quark number operator is non-hermitian, the distribution is over the complex plane. Moreover, because of the fermion determinant, the distribution is not real and positive. The computation is carried out within leading order chiral perturbation theory and gives direct insight into the delicate cancellations that take place in contributions to the total baryon number.
Cite
@article{arxiv.1011.5341,
title = {How the Quark Number fluctuates in QCD at small chemical potential},
author = {M. P. Lombardo and K. Splittorff and J. J. M. Verbaarschot},
journal= {arXiv preprint arXiv:1011.5341},
year = {2011}
}
Comments
7 pages 2 figures. Talk presented at the XXVIII International Symposium on Lattice Field Theory, Lattice2010, Villasimius, Italy, June 2010