Results 51 to 60 of about 2,706,843 (321)
Dynamics for a 2-vertex quantum gravity model [PDF]
Classical and Quantum Gravity, 2010 We use the recently introduced U(N) framework for loop quantum gravity to study the dynamics of spin network states on the simplest class of graphs: two vertices linked with an arbitrary number N of edges. Such graphs represent two regions, in and out, separated by a boundary surface.
Enrique F. Borja +4 more
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From Quantum Codes to Gravity: A Journey of Gravitizing Quantum Mechanics [PDF]
arXiv, 2021 In this note, I review a recent approach to quantum gravity that "gravitizes" quantum mechanics by emerging geometry and gravity from complex quantum states. Drawing further insights from tensor network toy models in AdS/CFT, I propose that approximate quantum error correction codes, when re-adapted into the aforementioned framework, also has promise ...
arxiv
Matrix model formulation of four dimensional gravity [PDF]
Nucl.Phys.Proc.Suppl. 94 (2001) 697-700, 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. We discuss how these models relate to four dimensional quantum gravity and the precise conditions allowing to associate a four-dimensional simplicial manifold to Feynman diagrams of a ...
arxiv +1 more source
Matrix quantization of gravitational edge modes
Journal of High Energy Physics, 2023 Gravitational subsystems with boundaries carry the action of an infinite-dimensional symmetry algebra, with potentially profound implications for the quantum theory of gravity.
William Donnelly +3 more
doaj +1 more source
Discrete Gravity Models and Loop Quantum Gravity: a Short Review [PDF]
Symmetry, Integrability and Geometry: Methods and Applications, 2012 v2: many amendments, matches published ...
Dupuis, Maite +2 more
openaire +7 more sources
A solvable model of flat space holography
Journal of High Energy Physics, 2023 We propose an explicit realization of flat space holography in two dimensions where both sides of the duality are independently defined and the boundary theory is completely solvable.
Felipe Rosso
doaj +1 more source
Quantum statistics in Bohmian trajectory gravity [PDF]
J. Phys.: Conf. Ser. 1275 012038 (2019), 2019 The recent experimental proposals by Bose et al. and Marletto et al. (BMV) outline a way to test for the quantum nature of gravity by measuring gravitationally induced differential phase accumulation over the superposed paths of two 10^-14kg masses. These authors outline the expected outcome of these experiments for semi-classical, quantum gravity and ...
arxiv +1 more source
Discriminating quantum gravity models by gravitational decoherence
Nuclear Physics B, 2023 Several phenomenological approaches to quantum gravity predict the existence of a minimal measurable length and/or a maximum measurable momentum near the Planck scale. When embedded into the framework of quantum mechanics, such constraints induce a modification of the canonical commutation relations and thus a generalization of the Heisenberg ...
Al-Nasrallah, Eissa +4 more
openaire +4 more sources
Topology induced first-order phase transitions in lattice quantum gravity
Journal of High Energy Physics, 2022 Causal Dynamical Triangulations (CDT) is a lattice formulation of quantum gravity, suitable for Monte-Carlo simulations which have been used to study the phase diagram of the model.
J. Ambjorn +3 more
doaj +1 more source