Two-color quark matter: U(1)A restoration, superfluidity, and quarkyonic phase

Tomáš Brauner, Kenji Fukushima, and Yoshimasa Hidaka
Phys. Rev. D 80, 074035 – Published 29 October 2009; Erratum Phys. Rev. D 81, 119904 (2010)

Abstract

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.

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  • Received 4 August 2009

DOI:https://doi.org/10.1103/PhysRevD.80.074035

©2009 American Physical Society

Erratum

Erratum: Two-color quark matter: U(1)A restoration, superfluidity, and quarkyonic phase [Phys. Rev. D 80, 074035 (2009)]

Tomáš Brauner, Kenji Fukushima, and Yoshimasa Hidaka
Phys. Rev. D 81, 119904 (2010)

Authors & Affiliations

Tomáš Brauner1,*,†, Kenji Fukushima2, and Yoshimasa Hidaka3

  • 1Institut für Theoretische Physik, Goethe-Universität, Max-von-Laue-Straße 1, D-60438 Frankfurt am Main, Germany
  • 2Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
  • 3Department of Physics, Kyoto University, Kyoto 606-8502, Japan

  • *On leave from Department of Theoretical Physics, Nuclear Physics Institute ASCR, CZ-25068 Řež, Czech Republic
  • brauner@ujf.cas.cz

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Issue

Vol. 80, Iss. 7 — 1 October 2009

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