Finite temperature properties of the Dirac operator under local boundary conditions

Details Finite temperature properties of the Dirac operator under local boundary conditions Finite temperature properties of the Dirac operator under local boundary conditions

2004-04-16

arxiv.org/abs/hep-th/0404115v2

J.Phys. A37 (2004) 9261-9274

Physics

High Energy Physics

High Energy Physics - Theory

Final version, to appear in Journal of Physics A

Scientific paper

10.1088/0305-4470/37/39/013

We study the finite temperature free energy and fermion number for Dirac fields in a one-dimensional spatial segment, under two different members of the family of local boundary conditions defining a self-adjoint Euclidean Dirac operator in two dimensions. For one of such boundary conditions, compatible with the presence of a spectral asymmetry, we discuss in detail the contribution of this part of the spectrum to the zeta-regularized determinant of the Dirac operator and, thus, to the finite temperature properties of the theory.

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