Thermal Operator and Dispersion Relation in QED at Finite Temperature and Chemical Potential

Details Thermal Operator and Dispersion Relation in QED at Finite Temperature and Chemical Potential Thermal Operator and Dispersion Relation in QED at Finite Temperature and Chemical Potential

2007-05-17

arxiv.org/abs/0705.2534v1

Phys.Rev.D76:087701,2007

Physics

High Energy Physics

High Energy Physics - Theory

5 pages, revtex

Scientific paper

10.1103/PhysRevD.76.087701

Combining the thermal operator representation with the dispersion relation in QED at finite temperature and chemical potential, we determine the complete retarded photon self-energy only from its absorptive part at zero temperature. As an application of this method, we show that, even for the case of a nonzero chemical potential, the temperature dependent part of the one loop retarded photon self-energy vanishes in $(1+1)$ dimensional massless QED.

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