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Renormalized Perturbation Theory: A Missing Chapter
Raymond Stora
Renormalized perturbation theory à la BPHZ can be founded on causality as analyzed by H. Epstein and V. Glaser in the seventies. Here, we list and discuss a number of additional co…
A Class of Topological Actions
M. Bauer, G. Girardi, R. Stora +1
We review definitions of generalized parallel transports in terms of Cheeger-Simons differential characters. Integration formulae are given in terms of Deligne-Beilinson cohomology…
Exercises in equivariant cohomology and topological theories
Raymond Stora
Equivariant cohomology is suggested as an alternative algebraic framework for the definition of topological field theories constructed by E. Witten circa 1988. It also enlightens t…
Exercises in equivariant cohomology
Raymond Stora
Equivariant cohomology is a mathematical framework particularly well adapted to a kinematical understanding of topological gauge theories of the cohomological type. It also sheds s…