Results 71 to 80 of about 1,952,544 (384)

Sphere packing and quantum gravity [PDF]

open access: yesJournal of High Energy Physics, 2019
We establish a precise relation between the modular bootstrap, used to con- strain the spectrum of 2D CFTs, and the sphere packing problem in Euclidean geometry.
Thomas Hartman, D. Mazáč, L. Rastelli
semanticscholar   +1 more source

Latticing quantum gravity [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1997
7 pages, TeX, 1 figure (epsf); contribution to Santa Margherita Conference on Constrained Dynamics and Quantum ...
openaire   +7 more sources

Spread complexity and topological transitions in the Kitaev chain

open access: yesJournal of High Energy Physics, 2023
A number of recent works have argued that quantum complexity, a well-known concept in computer science that has re-emerged recently in the context of the physics of black holes, may be used as an efficient probe of novel phenomena such as quantum chaos ...
Pawel Caputa   +5 more
doaj   +1 more source

Chiral Loop Quantum Supergravity and Black Hole Entropy

open access: yesUniverse, 2023
Recent work has shown that local supersymmetry on a spacetime boundary in N-extended AdS supergravity in chiral variables implies coupling to a boundary OSp(N|2)C super Chern–Simons theory.
Konstantin Eder, Hanno Sahlmann
doaj   +1 more source

Tabletop experiments for quantum gravity: a user’s manual [PDF]

open access: yesClassical and quantum gravity, 2018
Recent advances in cooling, control, and measurement of mechanical systems in the quantum regime have opened the possibility of the first direct observation of quantum gravity, at scales achievable in experiments.
D. Carney, P. Stamp, Jacob M. Taylor
semanticscholar   +1 more source

Nonperturbative quantum gravity [PDF]

open access: yesPhysics Reports, 2012
Review, 146 pages, many ...
Renate Loll   +4 more
openaire   +6 more sources

Dynamical Properties of the Mukhanov-Sasaki Hamiltonian in the Context of Adiabatic Vacua and the Lewis-Riesenfeld Invariant

open access: yesUniverse, 2019
We use the method of the Lewis-Riesenfeld invariant to analyze the dynamical properties of the Mukhanov-Sasaki Hamiltonian and, following this approach, investigate whether we can obtain possible candidates for initial states in the context of inflation ...
Max Joseph Fahn   +2 more
doaj   +1 more source

Coherent States for Fractional Powers of the Harmonic Oscillator Hamiltonian

open access: yesUniverse, 2021
Inspired by special and general relativistic systems that can have Hamiltonians involving square roots or more general fractional powers, in this article, we address the question of how a suitable set of coherent states for such systems can be obtained ...
Kristina Giesel, Almut Vetter
doaj   +1 more source

Quantum deformation of quantum gravity [PDF]

open access: yesNuclear Physics B, 1996
We describe a deformation of the observable algebra of quantum gravity in which the loop algebra is extended to framed loops. This allows an alternative nonperturbative quantization which is suitable for describing a phase of quantum gravity characterized by states which are normalizable in the measure of Chern-Simons theory. The deformation parameter,
Seth Major, Lee Smolin
openaire   +4 more sources

Defects in Jackiw-Teitelboim quantum gravity [PDF]

open access: yesJournal of High Energy Physics, 2019
We classify and study defects in 2d Jackiw-Teitelboim gravity. We show these are holographically described by a deformation of the Schwarzian theory where the reparametrization mode is integrated over different coadjoint orbits of the Virasoro group.
T. Mertens, G. Turiaci
semanticscholar   +1 more source

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