Results 101 to 110 of about 1,530,241 (273)
Berichte zur Wissenschaftsgeschichte, EarlyView.Abstract Short‐lived, unobservable, and not subject to the usual rules of conservation of energy and momentum, virtual particles—an integral part of the conceptual framework of quantum field theory (QFT)—exhibit a number of curious characteristics which, in recent decades, have in part fueled important discussions about their ontological status ...
Jean‐Philippe Martinez
wiley +1 more source
Global and microlocal aspects of Dirac operators: Propagators and Hadamard states
Mathematische Nachrichten, EarlyView.Abstract We propose a geometric approach to construct the Cauchy evolution operator for the Lorentzian Dirac operator on Cauchy‐compact globally hyperbolic 4‐manifolds. We realize the Cauchy evolution operator as the sum of two invariantly defined oscillatory integrals—the positive and negative Dirac propagators—global in space and in time, with ...
Matteo Capoferri, Simone Murro
wiley +1 more source
Gravitational Fluctuations as an Alternative to Inflation III. Numerical Results
Universe, 2020 Power spectra play an important role in the theory of inflation, and their ability to reproduce current observational data to high accuracy is often considered a triumph of inflation, largely because of a lack of credible alternatives.
Herbert W. Hamber +2 more
doaj +1 more source
Hybrid models in loop quantum cosmology [PDF]
, 2016 In the framework of Loop Quantum Cosmology (LQC), inhomogeneous models are usually quantized by means of a hybrid approach that combines loop quantization techniques with standard quantum field theory methods. This approach is based on a splitting of the
B. Navascués +2 more
semanticscholar +1 more source
Observational Exclusion of a Consistent Quantum Cosmology Scenario
, 2015 It is often argued that inflation erases all the information about what took place before it started. Quantum gravity, relevant in the Planck era, seems therefore mostly impossible to probe with cosmological observations.
Barrau, Aurelien +3 more
core +3 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
, 2006 Quantum cosmology in general denotes the application of quantum physics to the whole universe and thus gives rise to many realizations and examples, covering problems at different mathematical and conceptual levels. It is related to quantum gravity and more specifically describes the application to cosmological situations rather than the construction ...
openaire +4 more sources
Loop quantum cosmology gravitational baryogenesis [PDF]
, 2016 Loop quantum cosmology is an appealing quantum completion of classical cosmology, which brings along various theoretical features which in many cases offer a remedy for or modify various classical cosmology aspects.
S. Odintsov, V. Oikonomou, V. Oikonomou
semanticscholar +1 more source
Cosmology with minimal length uncertainty relations [PDF]
, 2008 We study the effects of the existence of a minimal observable length in the phase space of classical and quantum de Sitter (dS) and Anti de Sitter (AdS) cosmology.
Akhoury R. +4 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