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Factorization of finite temperature graphs in thermal QED

Journal Article · · Physical Review. D, Particles Fields
;  [1];  [2];  [3];  [4]
  1. Instituto de Fisica, Universidade de Sao Paulo, Sao Paulo (Brazil)
  2. Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627-0171 (United States)
  3. Departamento de Fisica, Universidad Tecnica Federico Santa Maria, Casilla 110-V, Valparaiso (Chile)
  4. Departamento de Fisica, Universidade Federal do Para, Belem, Para 66075-110 (Brazil)
We extend our previous analysis of gauge and Dirac fields in the presence of a chemical potential. We consider an alternative thermal operator which relates in a simple way the Feynman graphs in QED at finite temperature and charge density to those at zero temperature but nonzero chemical potential. Several interesting features of such a factorization are discussed in the context of the thermal photon and fermion self-energies.
OSTI ID:
20782718
Journal Information:
Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 6 Vol. 73; ISSN PRVDAQ; ISSN 0556-2821
Country of Publication:
United States
Language:
English

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