Convolution product construction of interactions in probabilistic physical models

Details Convolution product construction of interactions in probabilistic physical models Convolution product construction of interactions in probabilistic physical models

2007-06-05

arxiv.org/abs/0706.0653v2

Physics

Mathematical Physics

8 pages, submitted to Fizika B (Zagreb)

Scientific paper

This paper aims to give a probabilistic construction of interactions which may be relevant for building physical theories such as interacting quantum field theories. We start with the path integral definition of partition function in quantum field theory which recall us the probabilistic nature of this physical theory. From a Gaussian law considered as free theory, an interacting theory is constructed by nontrivial convolution product between the free theory and an interacting term which is also a probability law. The resulting theory, again a probability law, exhibits two proprieties already present in nowadays theories of interactions such as Gauge theory : the interaction term does not depend on the free term, and two different free theories can be implemented with the same interaction. The direct use of Gaussian measures allows to generalize the present construction for infinite dimensional spaces equipped with Gaussian measures.

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