The structure of the graviton self-energy at finite temperature

Details The structure of the graviton self-energy at finite temperature The structure of the graviton self-energy at finite temperature

1998-03-19

arxiv.org/abs/hep-th/9803155v1

Phys.Rev. D58 (1998) 085012

Physics

High Energy Physics

High Energy Physics - Theory

27 pages, 6 figures

Scientific paper

10.1103/PhysRevD.58.085012

We study the graviton self-energy function in a general gauge, using a hard thermal loop expansion which includes terms proportional to T^4, T^2 and log(T). We verify explicitly the gauge independence of the leading T^4 term and obtain a compact expression for the sub-leading T^2 contribution. It is shown that the logarithmic term has the same structure as the ultraviolet pole part of the T=0 self-energy function. We argue that the gauge-dependent part of the T^2 contribution is effectively canceled in the dispersion relations of the graviton plasma, and present the solutions of these equations.

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