Results 51 to 60 of about 113,880 (205)
Noncommutativity in Effective Loop Quantum Cosmology
, 2018 We construct a noncommutative extension of the Loop Quantum Cosmology effective scheme for the open FLRW model with a free scalar field via a theta deformation.
Díaz-Barrón, Luis Rey +3 more
core +1 more source
Reheating via gravitational particle production in simple models of quintessence or $\Lambda$CDM inflation [PDF]
, 2017 We have tested some simple $\Lambda$CDM (the same test is also valid for quintessence) inflation models, imposing that they match with the recent observational data provided by the BICEP and Planck's team and leading to a reheating temperature, which is ...
Haro, Jaume, Saló, Llibert Aresté
core +4 more sources
Non‐contrastive transcendence as gift and challenge to science and religion
Modern Theology, EarlyView.Abstract This article suggests that the nature of transcendence represents a promising topic for future engagement between revision‐minded theologians in the field of science and religion and tradition‐oriented ones. It does so by drawing on Kathryn Tanner's account of non‐contrastive transcendence within the history of Christian theology to illuminate
Peter N. Jordan
wiley +1 more source
The simplicity of physical laws
Noûs, EarlyView.Abstract Physical laws are strikingly simple, yet there is no a priori reason for them to be so. I propose that nomic realists—Humeans and non‐Humeans—should recognize simplicity as a fundamental epistemic guide for discovering and evaluating candidate physical laws.
Eddy Keming Chen
wiley +1 more source
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
THE QUANTUM MECHANICS OF COSMOLOGY [PDF]
Quantum Cosmology and Baby Universes, 1991 92 pages, 14 figures, presented at 7th Jerusalem Winter School 1990 on Quantum Cosmology and Baby Universes, posted here because the school proceedings are out of ...
openaire +3 more sources
Lessons from the void: What Boltzmann brains teach
Analytic Philosophy, EarlyView.Abstract Some physical theories predict that almost all brains in the universe are Boltzmann brains, that is, short‐lived disembodied brains that are accidentally assembled as a result of thermodynamic or quantum fluctuations. Physicists and philosophers of physics widely regard this proliferation as unacceptable, and so take its prediction as a basis ...
Bradford Saad
wiley +1 more source
Deformation quantization of cosmological models
, 2011 The Weyl-Wigner-Groenewold-Moyal formalism of deformation quantization is applied to cosmological models in the minisuperspace. The quantization procedure is performed explicitly for quantum cosmology in a flat minisuperspace.
A. Erdélyi +21 more
core +1 more source
Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source
, 2001 Lecture at NATO ASI "Structure Formation in the Universe", Cambridge, 26 July - 6 August ...
openaire +2 more sources