We present some up-to-date results on QCD phase transition in a chromomagnetic constant background field and in an abelian monopole background field. Our results indicate that the QCD critical temperature is not modified by a monopole background field, whilst it is modified by a constant chromomagnetic field. We improve our earlier estimate of the QCD critical parameters in a chromomagnetic background field by performing lattice simulations with weaker fields.
Cite
@article{arxiv.0710.1449,
title = {Perturbing QCD with external fields},
author = {Paolo Cea and Leonardo Cosmai and Massimo D'Elia},
journal= {arXiv preprint arXiv:0710.1449},
year = {2008}
}
Comments
contribution to the XXV International Symposium on Lattice Field Theory, July 30 - August 4 2007, Regensburg, Germany, 7 pages