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The contribution of quarks to the effective potential for the phase of theWilson line is computed at nonzero temperature and quark chemical potential toone and two loop order. At zero temperature, regardless of the value of thequark chemical potential, the effective potential for the phase of the Wilsonline vanishes. At nonzero temperature, for special values of the phase the freeenergy of quarks equals that of bosons; at nonzero chemical potential, suchquarks can ``Bose condense'', albeit with negative density.Comment: 7 pages, LaTe

Potential for the phase of the Wilson line at nonzero quark density