2003/08/31 by Yu. A. Sitenko, Yurii A. Sitenko, V. Gorkavenko +1
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics #hep-th
paper · pdf · doi:10.1016/j.nuclphysb.2003.11.002
published as Nucl.Phys. B679 (2004) 597-620 · 25 pages, 5 figures, journal version, minor changes, Eqs.(3.2)-(3.5) corrected
openalex publication_date 2003/12/04 · arxiv created 2003/12/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.