Factorization of finite temperature graphs in thermal QED

Journal Article · Wed Mar 15 00:00:00 EST 2006 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.73.067702· OSTI ID:20782718

Brandt, F T; Frenkel, J ^[1]; Das, Ashok ^[2]; Espinosa, Olivier ^[3]; Perez, Silvana ^[4]

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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, Vol. 73, Issue 6; Other Information: DOI: 10.1103/PhysRevD.73.067702; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CHARGE DENSITY
FACTORIZATION
FERMIONS
PHOTONS
POTENTIALS
QUANTUM ELECTRODYNAMICS
SELF-ENERGY