Results 41 to 50 of about 178,240 (316)
Universal critical behavior in tensor models for four-dimensional quantum gravity [PDF]
Journal of High Energy Physics, 2019 Four-dimensional random geometries can be generated by statistical models with rank-4 tensors as random variables. These are dual to discrete building blocks of random geometries. We discover a potential candidate for a continuum limit in such a model by
A. Eichhorn +3 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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Solving puzzles in deformed JT gravity: phase transitions and non-perturbative effects
Journal of High Energy Physics, 2021 Recent work has shown that certain deformations of the scalar potential in Jackiw-Teitelboim gravity can be written as double-scaled matrix models. However, some of the deformations exhibit an apparent breakdown of unitarity in the form of a negative ...
Clifford V. Johnson, Felipe Rosso
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Effective line elements and black-hole models in canonical loop quantum gravity [PDF]
Physical Review D, 2018 Canonical quantization is often used to suggest new effects in quantum gravity, in the dynamics as well as the structure of space-time. Usually, possible phenomena are first seen in a modified version of the classical dynamics, for instance in an ...
M. Bojowald +2 more
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Quantum gravity on finite spacetimes and dynamical mass [PDF]
Proceedings of Corfu Summer Institute 2021 "School and Workshops on Elementary Particle Physics and Gravity" — PoS(CORFU2021), 2022 We review quantum gravity model building using the new formalism of `quantum Riemannian geometry' to construct this on finite discrete spaces and on fuzzy ones such as matrix algebras.
S. Majid, J. N. Argota-Quiroz
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Phenomenology of low quantum gravity scale models [PDF]
Physical Review D, 1999 We study some phenomenological implications of models where the scale of quantum gravity effects lies much below the four-dimensional Planck scale. These models arise from M-theory vacua where either the internal space volume is large or the string coupling is very small.
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Coadjoint orbit action of Virasoro group and two-dimensional quantum gravity dual to SYK/tensor models [PDF]
Journal of High Energy Physics, 2017 The Nambu-Goldstone (NG) bosons of the SYK model are described by a coset space Diff/SL(2, ℝ), where Diff, or Virasoro group, is the group of diffeomorphisms of the time coordinate valued on the real line or a circle. It is known that the coadjoint orbit
G. Mandal, P. Nayak, S. Wadia
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q -deformed spin foam models of quantum gravity [PDF]
Classical and Quantum Gravity, 2007 We numerically study Barrett-Crane models of Riemannian quantum gravity. We have extended the existing numerical techniques to handle q-deformed models and arbitrary space-time triangulations. We present and interpret expectation values of a few selected observables for each model, including a spin-spin correlation function which gives insight into the
Khavkine, Igor, Christensen, J. Daniel
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Flat entanglement spectra in fixed-area states of quantum gravity [PDF]
Journal of High Energy Physics, 2018 A bstractWe use the Einstein-Hilbert gravitational path integral to investigate gravita- tional entanglement at leading order O(1/G). We argue that semiclassical states prepared by a Euclidean path integral have the property that projecting them onto a ...
Xi Dong, D. Harlow, D. Marolf
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An effective matrix model for dynamical end of the world branes in Jackiw-Teitelboim gravity
Journal of High Energy Physics, 2022 We study Jackiw-Teitelboim gravity with dynamical end of the world branes in asymptotically nearly AdS2 spacetimes. We quantize this theory in Lorentz signature, and compute the Euclidean path integral summing over topologies including dynamical branes ...
Ping Gao +2 more
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