Results 31 to 40 of about 640,772 (343)

Space and Time in Loop Quantum Gravity [PDF]

open access: yesBeyond Spacetime, 2020
Contribution to the volume "Beyond Spacetime: The Philosophical Foundations of Quantum Gravity", edited by Baptiste Le Biha, Keizo Matsubara and Christian ...
C. Rovelli
openaire   +6 more sources

Tests of Loop Quantum Gravity from the Event Horizon Telescope Results of Sgr A* [PDF]

open access: yesAstrophysical Journal, 2022
The Event Horizon Telescope (EHT) collaboration’s image of the compact object at the Galactic center is the first direct evidence of the supermassive black hole (BH) Sgr A*. The shadow of Sgr A* has an angular diameter d sh = 48.7 ± 7 μas with fractional
Misba Afrin   +2 more
semanticscholar   +1 more source

Towards a quantum notion of covariance in spherically symmetric loop quantum gravity [PDF]

open access: yesPhysical Review D, 2022
The covariance of loop quantum gravity studies of spherically symmetric space-times has recently been questioned. This is a reasonable worry, given that they are formulated in terms of slicing-dependent variables.
R. Gambini, J. Olmedo, J. Pullin
semanticscholar   +1 more source

Particles in Loop Quantum Gravity formalism: a thermodynamical description [PDF]

open access: yes, 2022
In this work, we analyse the thermodynamical behavior of massive and massless particles within Loop Quantum Gravity formalism. We investigate a modified dispersion relation which suffices to derive all our results of interest in an \textit{analytical ...
A. A. A. Filho
semanticscholar   +1 more source

Gravitational lensing by a black hole in effective loop quantum gravity [PDF]

open access: yesPhysical Review D, 2021
It is well known that general relativity is an effective theory of gravity at low energy scale, and actually quantum effects cannot be ignored in the strong-field regime.
Qi-Ming Fu, Xin Zhang
semanticscholar   +1 more source

Spherically symmetric loop quantum gravity: analysis of improved dynamics [PDF]

open access: yesClassical and quantum gravity, 2020
We study the ‘improved dynamics’ for the treatment of spherically symmetric space-times in loop quantum gravity introduced by Chiou et al in analogy with the one that has been constructed by Ashtekar, Pawlowski and Singh for the homogeneous space-times ...
R. Gambini, J. Olmedo, J. Pullin
semanticscholar   +1 more source

Black hole collapse and bounce in effective loop quantum gravity [PDF]

open access: yesClassical and quantum gravity, 2020
We derive effective equations with loop quantum gravity corrections for the Lemaître–Tolman–Bondi family of space-times, and use these to study quantum gravity effects in the Oppenheimer–Snyder collapse model.
Jarod George Kelly   +2 more
semanticscholar   +1 more source

A consistent model of non-singular Schwarzschild black hole in loop quantum gravity and its quasinormal modes [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2020
We investigate the interior structure, perturbations, and the associated quasinormal modes of a quantum black hole model recently proposed by Bodendorfer, Mele, and Münch (BMM).
Mariam Bouhmadi-L'opez   +4 more
semanticscholar   +1 more source

Effective loop quantum gravity framework for vacuum spherically symmetric spacetimes [PDF]

open access: yesPhysical Review D, 2020
We develop an effective framework for the $\bar\mu$ scheme of holonomy corrections motivated by loop quantum gravity for vacuum spherically symmetric space-times.
Jarod George Kelly   +2 more
semanticscholar   +1 more source

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