Dimensional Regularization in Position Space and a Forest Formula for Regularized Epstein-Glaser Renormalization

Details Dimensional Regularization in Position Space and a Forest Formula for Regularized Epstein-Glaser Renormalization Dimensional Regularization in Position Space and a Forest Formula for Regularized Epstein-Glaser Renormalization

2010-06-10

arxiv.org/abs/1006.2148v1

Physics

Mathematical Physics

PhD thesis, 107 pages, 3 figures

Scientific paper

The present work contains a consistent formulation of the methods of dimensional regularization (DimReg) and minimal subtraction (MS) in Minkowski position space. The methods are implemented into the framework of perturbative Algebraic Quantum Field Theory (pAQFT). The developed methods are used to solve the Epstein-Glaser recursion for the construction of time-ordered products in all orders of causal perturbation theory. A solution is given in terms of a forest formula in the sense of Zimmermann. A relation to the alternative approach to renormalization theory using Hopf algebras is established.

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