Eur. Phys. J. A (2007) 31: 787-789
https://doi.org/10.1140/epja/i2006-10173-x

QNP 2006

Quark matter in QC₂D

¹ Department of Physics, Swansea University, Singleton Park, SA2 8PP, Swansea, UK
² Department of Physics, Sejong University, Gunja-Dong, Gwangjin-Gu, 143-747, Seoul, South Korea
³ School of Mathematics, Trinity College, 2, Dublin, Ireland

^* e-mail: s.hands@swan.ac.uk

Received: 24 September 2006
Accepted: 1 October 2006
Published online: 16 February 2007

Abstract

Results are presented from a numerical study of lattice QCD with gauge group SU(2) and two flavors of Wilson fermion at non-zero quark chemical potential μ ≫ T. Studies of the equation of state, the superfluid condensate, and the Polyakov line all suggest that in addition to the low-density phase of Bose-condensed diquark baryons, there is a deconfined phase at higher quark density in which quarks form a degenerate system, whose Fermi surface is only mildly disrupted by Cooper pair condensation.