Fractional electric charge of a magnetic vortex at nonzero temperature

Details Fractional electric charge of a magnetic vortex at nonzero temperature Fractional electric charge of a magnetic vortex at nonzero temperature

2003-08-20

arxiv.org/abs/hep-th/0308129v2

Nucl.Phys. B679 (2004) 597-620

Physics

High Energy Physics

High Energy Physics - Theory

25 pages, 5 figures, journal version, minor changes, Eqs.(3.2)-(3.5) corrected

Scientific paper

10.1016/j.nuclphysb.2003.11.002

An ideal gas of twodimensional Dirac fermions in the background of a pointlike magnetic vortex with arbitrary flux is considered. We find that this system acquires fractional electric charge at finite temperatures and determine the functional dependence of the thermal average and quadratic fluctuation of the charge on the temperature, the vortex flux, and the continuous parameter of the boundary condition at the location of the vortex.

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