Interacting Quantum Fields on a Curved Background
arXiv:hep-th/9709011
Abstract
A renormalized perturbative expansion of interacting quantum fields on a globally hyperbolic spacetime is performed by adapting the Bogoliubov Epstein Glaser method to a curved background. The results heavily rely on techniques from microlocal analysis, in particular on Radzikowski's characterization of Hadamard states by wave front sets of Wightman functions.
6 pages, latex, contribution to the Proceedings of the ICMP Brisbane 1997