We study the QCD phase structure in the three-flavor Nambu--Jona-Lasinio model, incorporating the chiral-diquark interplay due to the axial anomaly. We demonstrate that for a certain range of model parameters, the low temperature critical point predicted by a Ginzburg-Landau analysis appears in the phase diagram. In addition, we show that the axial anomaly presents a new scenario for a possible BEC-BCS crossover in the color-flavor locked phase of QCD.
@article{arxiv.1009.3312,
title = {BEC-BCS crossover driven by the axial anomaly in the NJL model},
author = {Hiroaki Abuki and Gordon Baym and Tetsuo Hatsuda and Naoki Yamamoto},
journal= {arXiv preprint arXiv:1009.3312},
year = {2011}
}
Comments
6 pages, 2 figures, talk presented at "QCD@Work 2010", June 20-23, Martina Franca, Italy