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Loop Quantum Cosmology [PDF]

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   +4 more sources

Loop Quantum Cosmology [PDF]

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   +4 more sources

Loop quantum cosmology and singularities [PDF]

open access: yesScientific Reports, 2017
Loop quantum gravity is believed to eliminate singularities such as the big bang and big crunch singularity. This belief is based on studies of so-called loop quantum cosmology which concerns symmetry-reduced models of quantum gravity. In this paper, the
Ward Struyve
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   +3 more sources

Testing loop quantum cosmology [PDF]

open access: yesComptes Rendus Physique, 2017
Loop quantum cosmology predicts that quantum gravity effects resolve the big-bang singularity and replace it by a cosmic bounce. Furthermore, loop quantum cosmology can also modify the form of primordial cosmological perturbations, for example by ...
Edward Wilson-Ewing
exaly   +4 more sources

Cosmic Tangle: Loop Quantum Cosmology and CMB Anomalies

open access: yesUniverse, 2021
Loop quantum cosmology is a conflicted field in which exuberant claims of observability coexist with serious objections against the conceptual and physical viability of its current formulations.
Martin Bojowald
doaj   +3 more sources

Noncommutativity in Effective Loop Quantum Cosmology

open access: yesAdvances in High Energy Physics, 2019
We construct a noncommutative extension of the Loop Quantum Cosmology effective scheme for the flat FLRW model with a free scalar field via a theta deformation.
Abraham Espinoza-García   +3 more
doaj   +2 more sources

Unveiling the evolution of rotating black holes in loop quantum cosmology [PDF]

open access: yesScientific Reports
In this work, we aim to discuss about the evolution of rotating black holes (RBHs) within the context of loop quantum cosmology. Here, the main part of our research work focuses on the impacts of angular momentum based rotating parameter and accretion ...
Suryakanta Swain   +2 more
doaj   +2 more sources

Introduction to Loop Quantum Cosmology [PDF]

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   +6 more sources

Equivalence of Models in Loop Quantum Cosmology and Group Field Theory

open access: yesUniverse, 2019
The paradigmatic models often used to highlight cosmological features of loop quantum gravity and group field theory are shown to be equivalent, in the sense that they are different realizations of the same model given by harmonic cosmology.
Bekir Baytaş   +2 more
doaj   +3 more sources

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