2019/07/08 by T. G. Khunjua, K. G. Klimenko, R. N. Zhokhov
Physics and Astronomy · #hep-ph #hep-th #nucl-th
paper · pdf · doi:10.1103/physrevd.100.034009
published as Phys. Rev. D 100, 034009 (2019) · 19 pages, 3 figures. arXiv admin note: substantial text overlap with arXiv:1608.07688, arXiv:1704.01477, arXiv:1710.09706
arxiv created 2019/07/08 · arxiv updated 2019/08/14
In this paper we investigate in the large-Nc limit (Nc is the number of colored quarks) the phase structure of a massless (1+1)-dimensional quark model with four-quark interaction and in the presence of baryon (μB), isospin (μI) and chiral isospin (μI5) chemical potentials as well as at nonzero temperature. It is established that chiral isospin chemical potential leads to the generation of charged pion condensation (PC) in dense (nonzero baryon density) and chiral asymmetric quark matter for a wide range of isospin densities. It is shown that there exists a duality correspondence between the chiral symmetry breaking and the charged PC phenomena at any values of temperature even for very hot quark gluon plasma. Moreover, it is shown that charged PC phase with nonzero baryon density can be induced in the model at comparatively high temperatures. This opens up new possible physical systems, where it can be of importance, such as heavy ion collisions, just born neutron stars (proto-neutron stars), supernovas as well as neutron star mergers.