2021/04/16(Fri) 11:00 -12:00 五樓第一會議室 5F, 1st Meeting Room
Title
How Inflationary Gravitons Affect Gravitational Radiation and the Force of Gravity
Speaker
Prof. Richard Woodard (Department of Physics, University of Florida)Abstract
This talk is based on arXiv:2103.08547 with Lintao Tan and Nikolaos Tsamis. On a general homogeneous, isotropic and spatially flat background the graviton self-energy from matter requires four structure functions, whereas the contribution from gravitons requires nine. I give a convenient representation for these. I then use the graviton self-energy to quantum correct the linearized, effective Einstein equation, and I specialize the new formalism to the case of plane wave gravitons and to the two potentials that represent the gravitational response to a point mass. I then show how an old D=4 result (hep-ph/9602317) for the one graviton loop contribution to the graviton self-energy can be extended to give the fully renormalized result, and I employ it to work out one loop corrections.
Language
演講語言 (Language): in English
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