Results 51 to 60 of about 173,760 (383)

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
semanticscholar   +2 more sources

The phase structure of causal dynamical triangulations with toroidal spatial topology

Journal of High Energy Physics, 2018
We investigate the impact of topology on the phase structure of fourdimensional Causal Dynamical Triangulations (CDT). Using numerical Monte Carlo simulations we study CDT with toroidal spatial topology.
J. Ambjørn, J. Gizbert-Studnicki, A. Görlich, J. Jurkiewicz, D. Németh   +4 more
doaj   +1 more source

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
semanticscholar   +1 more source

Bra-ket wormholes in gravitationally prepared states

Journal of High Energy Physics, 2021
We consider two dimensional CFT states that are produced by a gravitational path integral. As a first case, we consider a state produced by Euclidean AdS2 evolution followed by flat space evolution.
Yiming Chen, Victor Gorbenko, Juan Maldacena   +2 more
doaj   +1 more source

Towards background independent quantum gravity with tensor models [PDF]

Classical and quantum gravity, 2018
We explore whether the phase diagram of tensor models could feature a pregeometric, discrete and a geometric, continuum phase for the building blocks of space. The latter are associated to rank d tensors of size N.
A. Eichhorn, Johannes Lumma, Tim A. Koslowski, Antonio D. Pereira   +3 more
semanticscholar   +1 more source

Discrete structures in gravity [PDF]

, 2000
Discrete approaches to gravity, both classical and quantum, are reviewed briefly, with emphasis on the method using piecewise-linear spaces. Models of 3-dimensional quantum gravity involving 6j-symbols are then described, and progress in generalising ...
Ambjørn J., Archer F. J., Baez J., Baez J., Barrett J. W., Barrett J. W., Barrett J. W., Barrett J. W., Barrett J. W., Barrett J. W., Barrett J. W., Birmingham D., Birmingham D., Brewin L., Brewin L., Carfora M., Caselle M., Correia da Silva C. L. B., Correia da Silva C. L. B., Franzosi R., Franzosi R., Freidel L., Freidel L., Gott J. R., Hamber H. W., Hamber H. W., Hartle J. B., Hasslacher B., Hollmann H. R., Immirzi G., Ionicioiu R., Ionicioiu R., Iwasaki J., Kauffman L. H., Mannion C. L., Markopoulou F., Markopoulou F., Menotti P., Ooguri H., Reisenberger M., Reisenberger M., Reisenberger M., Riedler J., Roberts J. D., Roček M., Ruth M. Williams, Schleich K., Schleich K., Tullio Regge, Turaev V. G., Waelbroeck H., Welling M., Williams R. M., ’t Hooft G., ’t Hooft G.   +54 more
core   +2 more sources

Models for Discrete Quantum Gravity [PDF]

Reports on Mathematical Physics, 2012
15 pages which include 2 figures which were created using LaTeX and contained in the ...
openaire   +4 more sources

On 2D quantum gravity coupled to a σ-model [PDF]

Nuclear Physics B - Proceedings Supplements, 1996
This contribution is a review of the method of isomonodromic quantization of dimensionally reduced gravity. Our approach is based on the complete separation of variables in the isomonodromic sector of the model and the related ``two-time" Hamiltonian structure.
Korotkin, D., Nicolai, H., Samtleben, H.
openaire   +5 more sources

Matrix model formulation of four dimensional gravity [PDF]

, 2000
The attempt of extending to higher dimensions the matrix model formulation of two-dimensional quantum gravity leads to the consideration of higher rank tensor models.
Ambjorn, Barrett, Boulatov, Boulatov, De Pietri, De Pietri, Ooguri, Ponzano, Roberto De Pietri   +8 more
core   +3 more sources

No Page curves for the de Sitter horizon

Journal of High Energy Physics, 2022
We investigate the fine-grained entropy of the de Sitter cosmological horizon. Starting from three-dimensional pure de Sitter space, we consider a partial reduction approach, which supplies an auxiliary system acting as a heat bath both at I $$ \mathcal ...
Joshua Kames-King, Evita M. H. Verheijden, Erik P. Verlinde   +2 more
doaj   +1 more source