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The S-matrix and graviton self-energy in quantum Yang-Mills gravity

By Jong-Ping Hsu and Sung Hoon Kim

Abstract

The S-matrix, its unitarity and the graviton self-energy at the one-loop level are discussed on the basis of quantum Yang-Mills gravity with the translational gauge symmetry in flat space-time. The unitarity and gauge invariance of the S-matrix in a class of gauge conditions is preserved by massless ghost vector particles, called `Feynman-DeWitt-Mandelstam' (FDM) ghosts, in quantum Yang-Mills gravity. Using dimensional regularization, the graviton self-energy are explicitly calculated with a general gauge condition. The resultant divergence of graviton self-energy at the one-loop level resembles to that in quantum electrodynamics.Comment: 20 pages, to be published in The European Physical Journal Plus, 2012. arXiv admin note: substantial text overlap with arXiv:1005.327

Topics: High Energy Physics - Theory, General Relativity and Quantum Cosmology, Mathematical Physics
Year: 2012
DOI identifier: 10.1140/epjp/i2012-12146-3
OAI identifier: oai:arXiv.org:1210.4503
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