Dimensionally regulated graviton 1-point function in de Sitter

摘要

We use dimensional regularization to compute the 1PI 1-point function of quantum gravity at one loop order in a locally de Sitter background. As with other computations, the result is a finite constant at this order. It corresponds to a small positive renormalization of the cosmological constant. (c) 2005 Elsevier Inc. All rights reserved.