Results 51 to 60 of about 38,508 (240)
Effective Field Theory of Loop Quantum Cosmology
Universe, 2019 Quantum cosmology is traditionally formulated in a minisuperspace setting, implicitly averaging fields over space to obtain homogeneous models. For universal reasons related to the uncertainty principle, quantum corrections then depend on the size of the
Martin Bojowald
doaj +1 more source
Inflationary Cosmology and Quantization Ambiguities in Semi-Classical Loop Quantum Gravity [PDF]
, 2004 In loop quantum gravity, modifications to the geometrical density cause a self-interacting scalar field to accelerate away from a minimum of its potential.
A. Ashtekar +30 more
core +3 more sources
Ekpyrotic loop quantum cosmology [PDF]
Journal of Cosmology and Astroparticle Physics, 2013 11 pages, v2: Clarifications and references ...
openaire +4 more sources
Qualitative study in loop quantum cosmology [PDF]
Classical and Quantum Gravity, 2017 This work contains a detailed qualitative analysis, in General Relativity and in Loop Quantum Cosmology, of the dynamics in the associated phase space of a scalar field minimally coupled with gravity, whose potential mimics the dynamics of a perfect fluid with a linear Equation of State (EoS).
Aresté Saló, Llibert +2 more
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Phenomenological implications of an alternative Hamiltonian constraint for quantum cosmology
, 2005 In this paper we review a model based on loop quantum cosmology that arises from a symmetry reduction of the self dual Plebanski action. In this formulation the symmetry reduction leads to a very simple Hamiltonian constraint that can be quantized ...
A. Ashtekar +6 more
core +1 more source
Loop quantum cosmology and inhomogeneities [PDF]
General Relativity and Gravitation, 2006 Inhomogeneities are introduced in loop quantum cosmology using regular lattice states, with a kinematical arena similar to that in homogeneous models considered earlier. The framework is intended to encapsulate crucial features of background independent quantizations in a setting accessible to explicit calculations of perturbations on a cosmological ...
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Perturbations in loop quantum cosmology
Journal of Physics: Conference Series, 2014 The era of precision cosmology has allowed us to accurately determine many important cosmological parameters, in particular via the CMB. Confronting Loop Quantum Cosmology with these observations provides us with a powerful test of the theory. For this to be possible we need a detailed understanding of the generation and evolution of inhomogeneous ...
Ivan Agullo +2 more
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Data‐Driven Review on Aerogels and Polymeric Aerogels
Angewandte Chemie, Volume 137, Issue 28, July 7, 2025.A review goes to data‐driven. An exhaustive literature survey provides an overview of research status on aerogels, a category of highly porous solids with unique physicochemical properties. Statistical/data‐driven analysis tells us positive/negative aspects; aerogels have a promising potential to contribute to emerging energy/environmental issues ...
Satoru Takeshita +2 more
wiley +2 more sources
Frontiers in Astronomy and Space Sciences, 2021 While the standard, six-parameter, spatially flat ΛCDM model has been highly successful, certain anomalies in the cosmic microwave background bring out a tension between this model and observations.
Abhay Ashtekar +3 more
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The mass of cosmological perturbations in Loop Quantum Cosmology
The Fifteenth Marcel Grossmann Meeting, 2022 Sixth Tux workshop on Quantum Gravity. Monday, February 19 to Friday, February 23. Tux, Austria (2018). ..-https://www.gravity.physik.fau.de/events/tux6/
Mena Marugán, Guillermo A. +2 more
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