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arXiv · 1409.3770

An Isometric Dynamics for a Causal Set Approach to Discrete Quantum Gravity

Stan Gudder
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Abstract

We consider a covariant causal set approach to discrete quantum gravity. We first review the microscopic picture of this approach. In this picture a universe grows one element at a time and its geometry is determined by a sequence of integers called the shell sequence. We next present the macroscopic picture which is described by a sequential growth process. We introduce a model in which the dynamics is governed by a quantum transition amplitude. The amplitude satisfies a stochastic and unitary condition and the resulting dynamics becomes isometric. We show that the dynamics preserves stochastic states. By "doubling down" on the dynamics we obtain a unitary group representation and a natural energy operator. These unitary operators are employed to define canonical position and momentum operators.

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Stan Gudder. 2014-09-12. An Isometric Dynamics for a Causal Set Approach to Discrete Quantum Gravity. https://doi.org/10.1007/s10773-014-2398-9

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