Thermal matter and radiation in a gravitational field

A. P. de Almeida, F. T. Brandt, J. Frenkel
1994 Physical Review D, Particles and fields  
We study the one-loop contributions of matter and radiation to the gravitational polarization tensor at finite temperatures. Using the analytically continued imaginary-time formalism, the contribution of matter is explicitly given to next-to-leading (T^2) order. We obtain an exact form for the contribution of radiation fields, expressed in terms of generalized Riemann zeta functions. A general expression is derived for the physical polarization tensor, which is independent of the
more » ... of graviton fields. We investigate the effective thermal masses associated with the normal modes of the corresponding graviton self-energy.
doi:10.1103/physrevd.49.4196 pmid:10017424 fatcat:lhnrjd3n2vcb7nbov2c57vcd3m