Factorization of finite temperature graphs in thermal QED

Abstract

We extend our previous analysis of gauge and Dirac fields in the presence of a chemical potential. We consider an alternate 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 non-zero chemical potential. Several interesting features of such a factorization are discussed in the context of the thermal photon and fermion self-energies.

4 pages

References in corpus (6)

• Isolating vacuum amplitudes in quantum field calculations at finite temperature
• Thermal Operator Representation of Finite Temperature Graphs
• Thermal Operator Representation of Finite Temperature Graphs II
• The thermal operator representation for Matsubara sums
• An operator representation for Matsubara sums
• Thermal Operator Representation of Finite-Temperature Amplitudes in the Presence of Chemical Potential

Cited by in corpus (9)

• Finite Temperature Effective Actions
• Effective actions at finite temperature
• Hard thermal effective actions in the Schwinger formulation
• Forward scattering amplitudes and the thermal operator representation
• Thermal Operator and Cutting Rules at Finite Temperature and Chemical Potential
• Thermal effective action for 1+1 dimensional massive QED
• Bogoliubov transformation and the thermal operator representation in the real time formalism
• Hard thermal effective action in QCD through the thermal operator
• Thermal Operator and Dispersion Relation in QED at Finite Temperature and Chemical Potential