General structure of the graviton self-energy
نویسندگان
چکیده
The non-linear relation imposed by gauge invariance on the thermal self-energy of gluons, has been recently discussed by Weldon in an interesting paper [1]. He proved that in QCD, the Slavnov-Taylor identities [2,3] require a non-linear constraint among the structure functions which occur at finite temperature. In this brief report, we show that a similar behavior occurs in the gauge theory of gravity. In this case, local gauge invariance leads to three non-linear relations which restrict the form of the thermal self-energy of gravitons. The Einstein theory of gravity is described by the Lagrangian density [4–6]
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