Two-color QCD in 3D at finite baryon density

Details Two-color QCD in 3D at finite baryon density Two-color QCD in 3D at finite baryon density

2002-10-16

arxiv.org/abs/hep-ph/0210219v2

Nucl.Phys. B654 (2003) 445-465

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pp, REVTeX4, no figures. (v2) references added and a typo fixed. version to appear in Nucl. Phys. B

Scientific paper

10.1016/S0550-3213(03)00034-8

We study the low energy phase structure of SU(2) gauge theories in three-dimensional spacetime, at finite baryon density. The pseudoreality of representations of SU(2) permits an analytic study of a real baryon chemical potential, and the restriction to 3D results in a different global symmetry breaking pattern from the corresponding 4D model studied previously by Kogut et al. We find a second-order phase transition separating the normal phase and the baryon superconducting phase. The chemical potential dependence of condensates and baryon density are computed. We find that the phase structure and the excitation spectrum are essentially the same as in 4D, despite the different symmetry groups, indicating a universality that is rooted in the properties of Riemannian symmetric spaces.

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