2000 character limit reached
Closed universes in two dimensional gravity (2402.00098v3)
Published 31 Jan 2024 in hep-th, gr-qc, and quant-ph
Abstract: We study closed universes in simple models of two dimensional gravity, such as Jackiw-Teiteilboim (JT) gravity coupled to matter, and a toy topological model that captures the key features of the former. We find there is a stark contrast, as well as some connections, between the perturbative and non-perturbative aspects of the theory. We find rich semi-classical physics. However, when non-perturbative effects are included there is a unique closed universe state in each theory. We discuss possible meanings and interpretations of this observation.
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