Feynman path integral in area tensor Regge calculus and correspondence principle

Details Feynman path integral in area tensor Regge calculus and correspondence principle Feynman path integral in area tensor Regge calculus and correspondence principle

2004-06-11

arxiv.org/abs/gr-qc/0406049v1

Phys.Lett. B601 (2004) 222-228

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, plain LaTeX

Scientific paper

10.1016/j.physletb.2004.09.038

The quantum measure in area tensor Regge calculus can be constructed in such the way that it reduces to the Feynman path integral describing canonical quantisation if the continuous limit along any of the coordinates is taken. This construction does not necessarily mean that Lorentzian (Euclidean) measure satisfies correspondence principle, that is, takes the form proportional to $e^{iS}$ ($e^{-S}$) where $S$ is the action. Requirement to fit this principle means some restriction on the action, or, in the context of representation of the Regge action in terms of independent rotation matrices (connections), restriction on such representation. We show that the representation based on separate treatment of the selfdual and antiselfdual rotations allows to modify the derivation and give sense to the conditionally convergent integrals to implement both the canonical quantisation and correspondence principles. If configurations are considered such that the measure is factorisable into the product of independent measures on the separate areas (thus far it was just the case in our analysis), the considered modification of the measure does not effect the vacuum expectation values.

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