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On Peculiarities and Pit Falls in Path Integrals

Gerard 't Hooft

hep-tharXiv:hep-th/0208054

Abstract

Path integrals can be rigorously defined only in low dimensional systems where the small distance limit can be taken. Particularly non-trivial models in more than four dimensions can only be handled with considerable amount of speculation. In this lecture we try to put these various aspects in perspective.

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