Ward Identities in Non-equilibrium QED

Details Ward Identities in Non-equilibrium QED Ward Identities in Non-equilibrium QED

1998-01-15

arxiv.org/abs/hep-th/9801103v2

Phys.Rev. D58 (1998) 085025

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, RevTex, 4 PostScript figures, revised version to be published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.58.085025

We verify the QED Ward identity for the two- and three -point functions at
non-equilibrium in the HTL limit. We use the Keldysh formalism of real time
finite temperature field theory. We obtain an identity of the same form as the
Ward identity for a set of one loop self-energy and one loop three-point vertex
diagrams which are constructed from HTL effective propagators and vertices.

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