Results 31 to 40 of about 173,760 (383)
Resurgence, conformal blocks, and the sum over geometries in quantum gravity [PDF]
Journal of High Energy Physics, 2023 In two dimensional conformal field theories the limit of large central charge plays the role of a semi-classical limit. Certain universal observables, such as conformal blocks involving the exchange of the identity operator, can be expanded around this ...
Nathan Benjamin +3 more
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Aspects of AdS2 quantum gravity and the Karch-Randall braneworld [PDF]
Journal of High Energy Physics, 2022 In this paper, we use the Karch-Randall braneworld to study theories of quantum gravity in two dimensional (nearly) anti-de Sitter space (AdS2). We focus on effective gravitational theories in the setup with two Karch-Randall branes embedded in an ...
H. Geng
semanticscholar +1 more source
Quantum gravity inspired nonlocal gravity model [PDF]
Physical Review D, 2017 We consider a nonlocal gravity model motivated by nonperturbative Quantum Gravity studies. This model, if correct, suggests the existence of strong IR relevant effects which can lead to an interesting late time cosmology. We implement the IR modification directly in the effective action.
Henrik Nersisyan +3 more
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An outsider’s perspective on information recovery in de Sitter space
Journal of High Energy Physics, 2023 Entanglement islands play a crucial role in our understanding of how Hawking radiation encodes information in a black hole, but their relevance in cosmological spacetimes is less clear. In this paper, we continue our investigation of information recovery
Lars Aalsma +2 more
doaj +1 more source
Modeling quantum gravity effects in inflation [PDF]
Journal of High Energy Physics, 2014 43 pages, no ...
Martinec, Emil J., Moore, Wynton E.
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Entanglement entropy in critical phenomena and analog models of quantum gravity [PDF]
, 2006 A general geometrical structure of the entanglement entropy for spatial partition of a relativistic QFT system is established by using methods of the effective gravity action and the spectral geometry. A special attention is payed to the subleading terms
D. Fursaev
semanticscholar +1 more source
Effective gravitational action for 2D massive fermions
Journal of High Energy Physics, 2021 We work out the effective gravitational action for 2D massive Euclidean fermions in a small mass expansion. Besides the leading Liouville action, the order m 2 gravitational action contains a piece characteristic of the Mabuchi action, much as for 2D ...
Adel Bilal +2 more
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The two-sphere partition function from timelike Liouville theory at three-loop order
Journal of High Energy Physics, 2022 While the Euclidean two-dimensional gravitational path integral is in general highly fluctuating, it admits a semiclassical two-sphere saddle if coupled to a matter CFT with large and positive central charge. In Weyl gauge this gravity theory is known as
Beatrix Mühlmann
doaj +1 more source
Status of Background-Independent Coarse Graining in Tensor Models for Quantum Gravity [PDF]
Universe, 2018 A background-independent route towards a universal continuum limit in discrete models of quantum gravity proceeds through a background-independent form of coarse graining. This review provides a pedagogical introduction to the conceptual ideas underlying
A. Eichhorn +2 more
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Loop Quantum Gravity motivated multihorizon rotating black holes [PDF]
Journal of Cosmology and Astroparticle Physics, 2022 With a semiclassical polymerization in the loop quantum gravity (LQG), the interior of the Schwarzschild black holes provides a captivating single-horizon regular black hole spacetime.
J. Kumar +2 more
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