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arXiv · hep-lat/9208014

Noncomputability Arising In Dynamical Triangulation Model Of Four-Dimensional Quantum Gravity

A. Nabutovsky·R. Ben-Av
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Abstract

Computations in Dynamical Triangulation Models of Four-Dimensional Quantum Gravity involve weighted averaging over sets of all distinct triangulations of compact four-dimensional manifolds. In order to be able to perform such computations one needs an algorithm which for any given $N$ and a given compact four-dimensional manifold $M$ constructs all possible triangulations of $M$ with $\leq N$ simplices. Our first result is that such algorithm does not exist. Then we discuss recursion-theoretic limitations of any algorithm designed to perform approximate calculations of sums over all possible triangulations of a compact four-dimensional manifold.

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A. Nabutovsky, R. Ben-Av. 1992-08-18. Noncomputability Arising In Dynamical Triangulation Model Of Four-Dimensional Quantum Gravity. https://doi.org/10.1007/bf02098020

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