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arXiv · hep-th/0307231

String bit models of two-dimensional quantum gravity coupled with matter

C. -W. H. Lee·R. B. Mann
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Abstract

We extend the formalism of Hamiltonian string bit models of quantum gravity type in two spacetime dimensions to include couplings to particles. We find that the single-particle closed and open universe models respectively behave like empty open and closed universes, and that a system of two distinguishable particles in a closed universe behaves like an empty closed universe. We then construct a metamodel that contains all such models, and find that its transition amplitude is exactly the same as the sl(2) gravity model.

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C. -W. H. Lee, R. B. Mann. 2003-11-26. String bit models of two-dimensional quantum gravity coupled with matter. https://doi.org/10.1016/j.nuclphysb.2003.09.031

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