Results 41 to 50 of about 116,432 (201)

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

Relational Quantum Cosmology [PDF]

, 2015
The application of quantum theory to cosmology raises a number of conceptual questions, such as the role of the quantum-mechanical notion of "observer" or the absence of a time variable in the Wheeler-DeWitt equation.
Vidotto, Francesca
core   +2 more sources

Loop Quantum Cosmology [PDF]

, 2013
This Chapter provides an up to date, pedagogical review of some of the most relevant advances in loop quantum cosmology. We review the quantization of homogeneous cosmological models, their singularity resolution and the formulation of effective ...
Agullo, Ivan, Corichi, Alejandro
core   +3 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
doaj   +1 more source

Nonlinear quantum cosmology [PDF]

General Relativity and Gravitation, 2009
Final Journal version: Further clarification in Introduction and Conclusion. references added.
Nguyen, L.-H., Parwani, R.R.
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
doaj   +1 more source

The perturbed universe in the deformed algebra approach of Loop Quantum Cosmology

, 2016
Loop quantum cosmology is a tentative approach to model the universe down to the Planck era where quantum gravity settings are needed. The quantization of the universe as a dynamical space-time is inspired by Loop Quantum Gravity ideas. In addition, loop
Grain, J.
core   +3 more sources

The Semiclassical Limit of Loop Quantum Cosmology [PDF]

, 2001
The continuum and semiclassical limits of isotropic, spatially flat loop quantum cosmology are discussed, with an emphasis on the role played by the Barbero-Immirzi parameter \gamma in controlling space-time discreteness.
Ashtekar A, Ashtekar A, Ashtekar A, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Bombelli L, Bombelli L, Corichi A, Karasev M V, Martin Bojowald, Rovelli C, Sahlmann H, Thiemann T, Thiemann T, Varadarajan M   +20 more
core   +3 more sources

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
doaj   +1 more source

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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