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Two-color quark matter: U(1)(A) restoration, superfluidity, and quarkyonic phase
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SYSNO ASEP 0339462 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Two-color quark matter: U(1)(A) restoration, superfluidity, and quarkyonic phase Author(s) Brauner, Tomáš (UJF-V) RID
Fukushima, K. (JP)
Hidaka, Y. (JP)Number of authors 3 Source Title Physical Review D: Particles, Fields, Gravitation and Cosmology. - : American Physical Society - ISSN 1550-7998
Roč. 80, č. 7 (2009), 074035/1-074035/14Number of pages 14 s. Language eng - English Country US - United States Keywords BARYON DENSITY ; SYMMETRY BREAKING ; CHIRAL-SYMMETRY ; 2 COLOR QCD Subject RIV BE - Theoretical Physics CEZ AV0Z10480505 - UJF-V (2005-2011) UT WOS 000271353400065 Annotation We discuss the phase structure of quantum chromodynamics (QCD) with two colors and two flavors of light quarks. This is motivated by the increasing interest in the QCD phase diagram as follows: ( 1) The QCD critical point search has been under intensive dispute and its location and existence suffer from uncertainty of effective U(1)(A) symmetry restoration. ( 2) A new phase called quarkyonic matter is drawing theoretical and experimental attention but it is not clear whether it can coexist with diquark condensation. We point out that two-color QCD is nontrivial enough to contain essential ingredients for ( 1) and ( 2) both, and most importantly, is a system without the sign problem in numerical simulations on the lattice. We adopt the two-flavor Nambu-Jona-Lasinio model extended with the two-color Polyakov loop and make quantitative predictions that can be tested by lattice simulations. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2010
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