Results 31 to 40 of about 39,698 (245)

Tomography in loop quantum cosmology [PDF]

open access: yesThe European Physical Journal Plus, 2022
19 pages, no ...
Jasel Berra–Montiel, Alberto Molgado
openaire   +2 more sources

Homogeneous loop quantum cosmology [PDF]

open access: yesClassical and Quantum Gravity, 2003
25 pages, 3 ...
Bojowald, M., Date, G., Vandersloot, K.
openaire   +5 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

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   +1 more source

Singularities in Loop Quantum Cosmology [PDF]

open access: yesPhysical Review Letters, 2008
5 pages, 3 figures. v2: Comments and references added.
Cailleteau, T.   +3 more
openaire   +5 more sources

Is a loopy and noncommutative early Universe viable?

open access: yesPhysics Letters B, 2023
We conduct a (pre-)inflationary dynamics study of the chaotic quadratic potential within the framework of a simple noncommutative extension of effective loop quantum cosmology put forward recently.
Luis Rey Díaz-Barrón   +3 more
doaj   +1 more source

Tachyon field in loop cosmology

open access: yesPhysics Letters B, 2020
The evolutionary pictures of tachyon field in modified loop cosmology have been investigated. We present the dynamical behavior of the tachyon field associated with an exponential potential and find that the pre-inflation dynamics are very similar in ...
Kui Xiao
doaj   +1 more source

(b,v)-type variables for black to white hole transitions in effective loop quantum gravity

open access: yesPhysics Letters B, 2021
Quantum gravity effects in effective models of loop quantum gravity, such as loop quantum cosmology, are encoded in the choice of so-called polymerisation schemes.
Norbert Bodendorfer   +2 more
doaj   +1 more source

Polymer Dynamics of Isotropic Universe in Ashtekar and in Volume Variables

open access: yesUniverse, 2022
We analyze the semiclassical and quantum polymer dynamics of the isotropic Universe in terms of both the standard Ashtekar-Barbero-Immirzi connection and its conjugate momentum and also of the new generalized coordinate conjugate to the Universe volume ...
Eleonora Giovannetti   +3 more
doaj   +1 more source

Does the Loop Quantum μo Scheme Permit Black Hole Formation?

open access: yesUniverse, 2021
We explore the way different loop quantization prescriptions affect the formation of trapped surfaces in the gravitational collapse of a homogeneous dust cloud, with particular emphasis on the so-called μo scheme in which loop quantum cosmology was ...
Bao-Fei Li, Parampreet Singh
doaj   +1 more source

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