Results 31 to 40 of about 84,921 (218)

Loop Quantum Cosmology, Modified Gravity and Extra Dimensions

open access: yesUniverse, 2016
Loop quantum cosmology (LQC) is a framework of quantum cosmology based on the quantization of symmetry reduced models following the quantization techniques of loop quantum gravity (LQG).
Xiangdong Zhang
doaj   +1 more source

Black-Hole Models in Loop Quantum Gravity

open access: yesUniverse, 2020
Dynamical black-hole scenarios have been developed in loop quantum gravity in various ways, combining results from mini and midisuperspace models. In the past, the underlying geometry of space-time has often been expressed in terms of line elements with ...
Martin Bojowald
doaj   +1 more source

Quasinormal modes of a massive scalar field nonminimally coupled to gravity in the spacetime of self-dual black hole

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
In this work, we investigate the quasinormal modes for a massive scalar field with a nonminimal coupling with gravity in the spacetime of a loop quantum black hole, known as the self-dual black hole.
J. S. Santos, M. B. Cruz, F. A. Brito
doaj   +1 more source

Particle Scattering in Loop Quantum Gravity [PDF]

open access: yesPhysical Review Letters, 2005
We devise a technique for defining and computing n-point functions in the context of a background-independent gravitational quantum field theory. We construct a tentative implementation of this technique in a perturbatively-finite loop/spinfoam model.
Modesto, Leonardo, Rovelli, Carlo
openaire   +4 more sources

Primordial Fluctuations From Quantum Gravity

open access: yesFrontiers in Astronomy and Space Sciences, 2021
We study the fluctuations and the correlations between spatial regions generated in the primordial quantum gravitational era of the universe. We point out that these can be computed using the Lorentzian dynamics defined by the Loop Quantum Gravity ...
Francesco Gozzini, Francesca Vidotto
doaj   +1 more source

Gravitational Thermodynamics of Space-time Foam in One-loop Approximation [PDF]

open access: yes, 1999
We show from one-loop quantum gravity and statistical thermodynamics that the thermodynamics of quantum foam in flat space-time and Schwarzschild space-time is exactly the same as that of Hawking-Unruh radiation in thermal equilibrium. This means we show
Coleman S.   +5 more
core   +3 more sources

1/N correction in holographic Wilson loop from quantum gravity

open access: yesJournal of High Energy Physics, 2019
We study 1/N corrections to a Wilson loop in holographic duality. Extending the AdS/CFT correspondence beyond the large N limit is an important but a subtle issue, as it needs quantum gravity corrections in the gravity side.
Koji Hashimoto   +2 more
doaj   +1 more source

Shadow and stability of quantum-corrected black holes

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
Recently the quantum Oppenheimer–Snyder gravitational collapse model has been proposed in loop quantum gravity, providing quantum-corrected Schwarzschild spacetimes as the exterior of the collapsing dust ball.
Jinsong Yang, Cong Zhang, Yongge Ma
doaj   +1 more source

AN INVITATION TO LOOP QUANTUM GRAVITY [PDF]

open access: yesQuantum Theory and Symmetries, 2004
50 pages, to be submitted to Reviews of Modern ...
openaire   +2 more sources

Cosmological Footprints of Loop Quantum Gravity [PDF]

open access: yesPhysical Review Letters, 2009
Accepted by Phys. Rev.
Grain, J., Barrau, A.
openaire   +5 more sources

Home - About - Disclaimer - Privacy