Results 11 to 20 of about 51,813 (205)

Beyond General Relativity: Models for Quantum Gravity, Loop Quantum Cosmology and Black Holes [PDF]

open access: yesUniverse, 2020
In the past two decades, we have witnessed extraordinary progress in precision measurements in cosmology [...]
Nick E. Mavromatos
doaj   +3 more sources

Loop Quantum Cosmology

open access: yesLiving Reviews in Relativity, 2008
Quantum gravity is expected to be necessary in order to understand situations in which classical general relativity breaks down. In particular in cosmology one has to deal with initial singularities, i.e., the fact that the backward evolution of a ...
Bojowald Martin
doaj   +2 more sources

Loop Quantum Cosmology

open access: yesLiving Reviews in Relativity, 2005
Quantum gravity is expected to be necessary in order to understand situations where classical general relativity breaks down. In particular in cosmology one has to deal with initial singularities, i.e., the fact that the backward evolution of a classical
Bojowald Martin
doaj   +2 more sources

The Quantum Memory Matrix: A Unified Framework for the Black Hole Information Paradox [PDF]

open access: yesEntropy
We present the Quantum Memory Matrix (QMM) hypothesis, which addresses the longstanding Black Hole Information Paradox rooted in the apparent conflict between Quantum Mechanics (QM) and General Relativity (GR).
Florian Neukart   +2 more
doaj   +2 more sources

Hybrid Loop Quantum Cosmology: An Overview

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Loop Quantum Gravity is a nonperturbative and background independent program for the quantization of General Relativity. Its underlying formalism has been applied successfully to the study of cosmological spacetimes, both to test the principles and ...
Beatriz Elizaga Navascués   +1 more
doaj   +1 more source

Quantum cosmology of pure connection general relativity

open access: yesClassical and Quantum Gravity, 2023
Abstract We study homogeneous cosmological models in formulations of general relativity with cosmological constant based on a (complexified) connection rather than a spacetime metric, in particular in a first order theory obtained by integrating out the self-dual two-forms in the chiral Plebański formulation.
Steffen Gielen, Elliot Nash
openaire   +3 more sources

A scientometric study of general relativity and quantum cosmology from 2000 to 2012 [PDF]

open access: yesScientometrics, 2015
2015 is the centennial of Einstein General Relativity. On this occasion, we examine the General Relativity and Quantum Cosmology (GRQC) field of research by analysing 38291 papers uploaded on the electronic archives arXiv.org from 2000 to 2012. We establish a map of the countries contributing to GRQC in 2012.
Stephane Fay, Sebastien Gautrias
openaire   +2 more sources

Gauge-Invariant Perturbations at a Quantum Gravity Bounce

open access: yesUniverse, 2022
We study the dynamics of gauge-invariant scalar perturbations in cosmological scenarios with a modified Friedmann equation, such as quantum gravity bouncing cosmologies.
Steffen Gielen, Lisa Mickel
doaj   +1 more source

A Rotating Model of a Light Speed Expanding Hubble-Hawking Universe

open access: yesPhysical Sciences Forum, 2023
Based on light speed expansion, a modified red shift formula, a scaled Hawking’s black hole temperature formula, the super gravity of galactic baryon matter and baby Planck ball, in our recent publications we have clearly established a novel model of ...
U. V. Satya Seshavatharam   +1 more
doaj   +1 more source

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