de Sitter gravity from lattice gauge theory

Abstract

We investigate a lattice model for Euclidean quantum gravity based on discretization of the Palatini formulation of General Relativity. Using Monte Carlo simulation we show that while a naive approach fails to lead to a vacuum state consistent with the emergence of classical spacetime, this problem may be evaded if the lattice action is supplemented by an appropriate counter term. In this new model we find regions of the parameter space which admit a ground state which can be interpreted as (Euclidean) de Sitter space.

16 pages, 11 figures. email address updated

References in corpus (3)

• Planckian Birth of the Quantum de Sitter Universe
• The Nonperturbative Quantum de Sitter Universe
• The Self-Organized de Sitter Universe

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• Exploratory applications of the Fröhlich-Morchio-Strocchi mechanism in quantum gravity
• The Fröhlich-Morchio-Strocchi mechanism: A underestimated legacy
• Causal Space-Times on a Null Lattice