We present a study of the 1+1 flavor system of strongly interacting matter in terms of the Polyakov−Nambu−Jona-Lasinio model. We find that though the small isospin symmetry breaking brought in through unequal light quark masses is too small to affect the thermodynamics of the system in general, it may have significant effect in baryon-isospin correlations and have a measurable impact in heavy-ion collision experiments.
@article{arxiv.1212.6134,
title = {Isospin symmetry breaking and baryon-isospin correlations from Polyakov$-$Nambu$-$Jona-Lasinio model},
author = {Abhijit Bhattacharyya and Sanjay K. Ghosh and Anirban Lahiri and Sarbani Majumder and Sibaji Raha and Rajarshi Ray},
journal= {arXiv preprint arXiv:1212.6134},
year = {2014}
}