1210.4503 (Jong-Ping Hsu et al.)

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

Jong-Ping Hsu, Sung Hoon Kim

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.

View original: http://arxiv.org/abs/1210.4503