Emergent Gravity in a Holographic Universe

Abstract

This dissertation investigates thermodynamic, emergent and holographic aspects of gravity in the context of causal diamonds. We obtain a gravitational first law for causal diamonds in maximally symmetric spacetimes and argue that these diamonds are in thermodynamic equilibrium at negative temperature. Further, gravitational field equations, including higher curvature corrections, are derived from an equilibrium condition on the generalized entropy of small maximally symmetric diamonds. Finally, we assign three holographic microscopic quantities to causal diamonds in spherically symmetric spacetimes, and for non-AdS geometries we interpret them in terms of the long string degrees of freedom of symmetric product conformal field theories.

arXiv commentPh.D. Thesis, University of Amsterdam, June 2019, 216 pages, 16 figures; based on 1812.01596, 1612.04374 and 1801.02589

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Cited by in corpus (4)

• Microcanonical Action and the Entropy of Hawking Radiation
• Conformal quantum mechanics of causal diamonds
• On the nature of the black hole information problem
• On the Euclidean Action of de Sitter Black Holes and Constrained Instantons