Violation of the phase space general covariance as a diffeomorphism anomaly in quantum mechanics

Details Violation of the phase space general covariance as a diffeomorphism anomaly in quantum mechanics Violation of the phase space general covariance as a diffeomorphism anomaly in quantum mechanics

2010-07-29

arxiv.org/abs/1007.5292v1

Physics

High Energy Physics

High Energy Physics - Theory

36 pages

Scientific paper

We consider a topological quantum mechanics described by a phase space path integral and study the 1-dimensional analog for the path integral representation of the Kontsevich formula. We see that the naive bosonic integral possesses divergences, that it is even naively non-invariant and thus is ill-defined. We then consider a super-extension of the theory which eliminates the divergences and makes the theory naively invariant. This super-extension is equivalent to the correct choice of measure and was discussed in the literature. We then investigate the behavior of this extended theory under diffeomorphisms of the extended phase space and despite of its naive invariance find out that the theory possesses anomaly under nonlinear diffeomorphisms. We localize the origin of the anomaly and calculate the lowest nontrivial anomalous contribution.

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