Results 101 to 110 of about 39,698 (245)

Loop quantum cosmology: a status report [PDF]

open access: yesClassical and Quantum Gravity, 2011
138 pages, 15 figures. Invited Topical Review, To appear in Classical and Quantum Gravity.
Ashtekar, Abhay, Singh, Parampreet
openaire   +2 more sources

Numerical Techniques in Loop Quantum Cosmology

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2012
In this article, we review the use of numerical techniques to obtain solutions for the quantum Hamiltonian constraint in loop quantum cosmology (LQC).
David Brizuela   +2 more
doaj   +1 more source

Lorentzian wormhole in the framework of loop quantum cosmology

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
In this paper, we construct a traversable static Lorentzian wormhole in the effective scenario of Loop Quantum Cosmology (LQC), where the field equations are modified due to the ultraviolet (UV) corrections introduced at large space-time curvatures.
Rikpratik Sengupta   +2 more
doaj   +1 more source

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

open access: yes, 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   +2 more sources

Quantum cosmology from quantum gravity condensates: cosmological variables and lattice-refined dynamics

open access: yesNew Journal of Physics, 2014
In the context of group field theory condensate cosmology, we clarify the extraction of cosmological variables from the microscopic quantum gravity degrees of freedom.
Steffen Gielen, Daniele Oriti
doaj   +1 more source

Gravity's rainbow: A bridge between LQC and DSR

open access: yesPhysics Letters B, 2017
The doubly special relativity (DSR) theories are constructed in order to take into account an observer-independent length scale in special relativity framework. Gravity's rainbow is a simple generalization of DSR theories to incorporate gravity.
M.A. Gorji, K. Nozari, B. Vakili
doaj   +1 more source

Non-Gaussian features from the inverse volume corrections in loop quantum cosmology

open access: yes, 2012
In this paper we study the non-Gaussian features of the primordial fluctuations in loop quantum cosmology with the inverse volume corrections. The detailed analysis is performed in the single field slow-roll inflationary models.
A. Ashtekar   +7 more
core   +1 more source

Loop Quantum Cosmological Perturbations

open access: yesJournal of Physics: Conference Series, 2014
4 pags. 2nd International Conference on Mathematical Modeling in Physical Sciences 2013; Open Access funded by Creative Commons Atribution Licence 3.0 In the context of loop quantum cosmology, we provide a complete quantization of an inhomogeneous inflationary model consisting of a perturbed Friedmann-Lemaˆıtre-RobertsonWalker universe filled with a ...
Fernández Méndez, Mikel   +2 more
openaire   +2 more sources

Properties of Fluctuating States in Loop Quantum Cosmology

open access: yesMathematics, 2019
In loop quantum cosmology, the values of volume fluctuations and correlations determine whether the dynamics of an evolving state exhibits a bounce. Of particular interest are states that are supported only on either the positive or the negative part of ...
Martin Bojowald
doaj   +1 more source

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