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QCD-like theories at nonzero temperature and density
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SYSNO ASEP 0353445 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název QCD-like theories at nonzero temperature and density Tvůrce(i) Zhang, T. (DE)
Brauner, Tomáš (UJF-V) RID
Rischke, D.H. (DE)Zdroj.dok. Journal of High Energy Physics. - : Springer - ISSN 1126-6708
-, č. 6 (2010), 064/1-064/31Poč.str. 31 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova Confinement ; Chiral Lagrangians ; QCD Vědní obor RIV BE - Teoretická fyzika CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000279630800011 DOI 10.1007/JHEP06(2010)064 Anotace 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. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2011
Počet záznamů: 1