Počet záznamů: 1
QCD-like theories at nonzero temperature and density
0353445 - UJF-V 2011 RIV US eng J - Článek v odborném periodiku
Zhang, T. - Brauner, Tomáš - Rischke, D.H.
QCD-like theories at nonzero temperature and density.
Journal of High Energy Physics. -, č. 6 (2010), 064/1-064/31 ISSN 1126-6708
Výzkumný záměr: CEZ:AV0Z10480505
Klíčová slova: Confinement * Chiral Lagrangians * QCD
Kód oboru RIV: BE - Teoretická fyzika
Impakt faktor: 6.049, rok: 2010
We investigate the properties of hot and/or dense matter in QCD-like theories with quarks in a (pseudo) real representation of the gauge group using the Nambu-Jona-Lasinio model. The gauge dynamics is modeled using a simple lattice spin model with nearest-neighbor interactions. We first keep our discussion as general as possible, and only later focus on theories with adjoint quarks of two or three colors. Calculating the phase diagram in the plane of temperature and quark chemical potential, it is qualitatively confirmed that the critical temperature of the chiral phase transition is much higher than the deconfinement transition temperature. At a chemical potential equal to half of the diquark mass in the vacuum, a diquark Bose-Einstein condensation (BEC) phase transition occurs. In the two-color case, a Ginzburg-Landau expansion is used to study the tetra-critical behavior around the intersection point of the deconfinement and BEC transition lines, which are both of second order.
Trvalý link: http://hdl.handle.net/11104/0192694