Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2000-10-19
Phys.Rev.D62:085021,2000
Physics
High Energy Physics
High Energy Physics - Theory
17 pages, 2 figures
Scientific paper
10.1103/PhysRevD.62.085021
In this paper we derive the general expression of a one-loop effective potential of the nonintegrable phases of Wilson lines for an SU(N) gauge theory with a massless adjoint fermion defined on the spactime manifold $R^{1,d-3}\times T^2$ at finite temperature and fermion density. The Phase structure of the vacuum is presented for the case with $d=4$ and N=2 at zero temperature. It is found that gauge symmetry is broken and restored alternately as the fermion density increases, a feature not found in the Higgs mechanism. It is the manifestation of the quantum effects of the nonintegrable phases.
Ho Choon-Lin
Lee Chung-Chieh
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