Results 41 to 50 of about 115,765 (198)

Thermodynamics in Loop Quantum Cosmology

Advances in High Energy Physics, 2009
Loop quantum cosmology (LQC) is very powerful to deal with the behavior of early universe. Moreover, the effective loop quantum cosmology gives a successful description of the universe in the semiclassical region.
Li-Fang Li, Jian-Yang Zhu
doaj   +1 more source

Correspondence between dark energy quantum cosmology and Maxwell equations

European Physical Journal C: Particles and Fields, 2019
A Friedmann–Robertson–Walker cosmology with dark energy can be modelled using a quintessence field. That system is equivalent to a relativistic particle moving on a two-dimensional conformal spacetime.
Felipe A. Asenjo, Sergio A. Hojman
doaj   +1 more source

Isotropic Loop Quantum Cosmology [PDF]

, 2002
Isotropic models in loop quantum cosmology allow explicit calculations, thanks largely to a completely known volume spectrum, which is exploited in order to write down the evolution equation in a discrete internal time.
, Ames W F, Ashtekar A, Ashtekar A, Ashtekar A, Ashtekar A, Baez J C, Bahcall J N, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Gurovich V Ts, Hawking S W, Immirzi G, Kuchar K V, Martin Bojowald, Rovelli C, Thiemann T, Thiemann T, Thiemann T, Veneziano G, Witten E   +25 more
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Hořava-Lifshitz Scalar Field Cosmology: Classical and Quantum Viewpoints

Advances in High Energy Physics, 2021
In this paper, we study a projectable Hořava-Lifshitz cosmology without the detailed balance condition minimally coupled to a nonlinear self-coupling scalar field.
Fatimah Tavakoli, Babak Vakili, Hossein Ardehali   +2 more
doaj   +1 more source

A Brief Introduction to Loop Quantum Cosmology [PDF]

, 2009
In recent years, Loop Quantum Gravity has emerged as a solid candidate for a nonperturbative quantum theory of General Relativity. It is a background independent theory based on a description of the gravitational field in terms of holonomies and fluxes ...
Marugan, Guillermo A. Mena
core   +2 more sources

Noncommutativity in Effective Loop Quantum Cosmology

Advances 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, Efraín Torres-Lomas, Sinuhé Pérez-Payán, Luis Rey Díaz-Barrón   +3 more
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Polymer Dynamics of Isotropic Universe in Ashtekar and in Volume Variables

Universe, 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, Gabriele Barca, Federico Mandini, Giovanni Montani   +3 more
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Quantum cosmological models [PDF]

Classical and Quantum Gravity, 2005
revised: now includes time asymmetry, black hole final state etc, 71 ...
openaire   +3 more sources

Quantum Models for Cosmology

Universe, 2022
This Special Issue presents a collection of review and original papers on various aspects and applications of quantum cosmological models [...]
Jean-Pierre Gazeau, Przemysław Małkiewicz   +1 more
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Quantum Cosmological Relational Model of Shape and Scale in 1-d

, 2011
Relational particle models are useful toy models for quantum cosmology and the problem of time in quantum general relativity. This paper shows how to extend existing work on concrete examples of relational particle models in 1-d to include a notion of ...
Abramowitz M, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E, Anderson E Barbour J B, Barbour J B, Barbour J B, Barbour J B, Barbour J B, Barbour J B, Barbour J B, Barbour J B Elze H-T, Barbour J B Foster B Z, Barbour J B Smolin L, Barvinsky A O, Barvinsky A O, Bojowald M, Courant R, Dirac P A M, Edward Anderson, Frose Fischer C, Gryb S B, Halliwell J J, Harrison E R, Hartle J B, Isham C J, Isham C J, Kiefer C, Kuchař K V, Kuchař K V, Kuchař K V, Kuchař K V, Kuchař K V Kunstatter G Vincent D Williams J, Lanczos C, Landau L D, Marchal C, Messiah A, Milne E A, Misner C W, Misner C W, Misner C W, Mizushima M, Moss I, Pauling L, Peebles P J E, Penrose R, Rindler W, Robinett R W, Rovelli C, Ryan M, Schwinger J, Smolin L, Smolin L, Tetradis N, Wheeler J A, Wilson A H, Wiltshire D L, Á Gergely L, Á Gergely L   +82 more
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