Theta vacuum effects on QCD phase diagram
High Energy Physics - Phenomenology
2011-11-01 v2 High Energy Physics - Lattice
High Energy Physics - Theory
Nuclear Theory
Abstract
Theta vacuum effects on the QCD phase structure in the \mu-T plane are studied by using the Polyakov-loop extended Nambu-Jona-Lasinio model and its extension, where \mu is the quark chemical potential and T is temperature, respectively. As the parameter \theta of the theta vacuum increases, the chiral transition becomes stronger. For large \theta, it eventually becomes first order even at zero \mu.
Keywords
Cite
@article{arxiv.1105.0413,
title = {Theta vacuum effects on QCD phase diagram},
author = {Yuji Sakai and Hiroaki Kouno and Takahiro Sasaki and Masanobu Yahiro},
journal= {arXiv preprint arXiv:1105.0413},
year = {2011}
}
Comments
7 pages, 6 figures