Results 61 to 70 of about 500,703 (203)

Introduction to Loop Quantum Cosmology

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2012
This is an introduction to loop quantum cosmology (LQC) reviewing mini- and midisuperspace models as well as homogeneous and inhomogeneous effective dynamics.
Kinjal Banerjee   +2 more
doaj   +1 more source

Loop quantum gravity and the cyclic universe [PDF]

open access: yesPhysical Review D, 2004
6 pages, 4 figures; v2: minor changes to match PRD ...
Parampreet Singh   +3 more
openaire   +6 more sources

Quantum black holes in loop quantum gravity [PDF]

open access: yesClassical and Quantum Gravity, 2014
20 pages.
Rodolfo Gambini   +2 more
openaire   +5 more sources

Finite-distance gravitational deflection of massive particles by a rotating black hole in loop quantum gravity

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
A rotating black hole in loop quantum gravity was constructed by Brahma, Chen, and Yeom based on a nonrotating counterpart using the revised Newman–Janis algorithm recently.
Yang Huang, Zhoujian Cao
doaj   +1 more source

Evidence for loop quantum gravity

open access: yesSSRN Electronic Journal, 2021
This article points out that when the boundary condition $\frac{T}{T_{c}}=z$ (when z is a complex number) is preset, bosons can produce Bose condensation without an energy layer. Under Bose condensation, incident waves may condense in various black holes in the theory of loop quantum gravity.
openaire   +3 more sources

Relativistic Planck-scale polymer

open access: yesPhysics Letters B, 2017
Polymer quantum mechanics has been studied as a simplified picture that reflects some of the key properties of Loop Quantum Gravity; however, while the fate of relativistic symmetries in Loop Quantum Gravity is still not established, it is usually ...
Giovanni Amelino-Camelia   +3 more
doaj  

On the UV Dimensions of Loop Quantum Gravity [PDF]

open access: yesAdvances in High Energy Physics, 2016
Planck-scale dynamical dimensional reduction is attracting more and more interest in the quantum-gravity literature since it seems to be a model independent effect. However, different studies base their results on different concepts of space-time dimensionality. Most of them rely on thespectraldimension; others refer to theHausdorffdimension; and, very
openaire   +5 more sources

Two-loop quantum gravity

open access: yesNuclear Physics B, 1992
We prove the existence of a nonrenormalizable infinity in the two-loop effective action of perturbative quantum gravity by means of an explicit calculation. Our final result agrees with that obtained by earlier authors. We use the background-field method in coordinate space, combined with dimensional regularization and a heat kernel representation for ...
Anton E.M. van de Ven   +1 more
openaire   +3 more sources

Inequivalence of mimetic gravity with models of loop quantum gravity [PDF]

open access: yesPhys. Rev. D 109 (2024) 084044
Certain versions of mimetic gravity have recently been claimed to present potential covariant theories of canonically modified spherically symmetric gravity, motivated by ingredients from loop quantum gravity. If such an equivalence were to hold, it would demonstrate general covariance of a large class of models considered in loop quantum gravity ...
arxiv   +1 more source

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