Results 31 to 40 of about 3,204 (220)
On the time delay between ultra-relativistic particles
Physics Letters B, 2016 The time delay between the receptions of ultra-relativistic particles emitted simultaneously is a useful observable for both fundamental physics and cosmology.
Pierre Fleury
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Cosmic Analogues of Classic Variational Problems
Universe, 2020 Several classic one-dimensional problems of variational calculus originating in non-relativistic particle mechanics have solutions that are analogues of spatially homogeneous and isotropic universes.
Valerio Faraoni
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Analogy between equilibrium beach profiles and closed universes
Physical Review Research, 2019 We reformulate the variational problem describing equilibrium beach profiles in the thermodynamic approach of Jenkins and Inman [J. Geophys. Res.: Oceans 111, C02003 (2006)10.1029/2005JC002899].
Valerio Faraoni
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Cosmology with inhomogeneous magnetic fields [PDF]
, 2007 We review spacetime dynamics in the presence of large-scale electromagnetic fields and then consider the effects of the magnetic component on perturbations to a spatially homogeneous and isotropic universe.
Roy Maartens +5 more
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Analogues of glacial valley profiles in particle mechanics and in cosmology
FACETS, 2017 An ordinary differential equation describing the transverse profiles of U-shaped glacial valleys has two formal analogies, which we explore in detail, bridging these different areas of research.
Valerio Faraoni, Adriana M. Cardini
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Ricci cosmology in light of astronomical data
European Physical Journal C: Particles and Fields, 2021 Recently, a new cosmological framework, dubbed Ricci cosmology, has been proposed. Such a framework has emerged from the study of relativistic dynamics of fluids out of equilibrium in a curved background and is characterised by the presence of deviations
Roberto Caroli +2 more
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Cosmological dynamics of relativistic MOND
Journal of Cosmology and Astroparticle Physics, 2022 Abstract In this paper, we investigate the recently proposed relativistic theory for MOND using phase space analysis. Unlike its precedent theory, namely TeVeS, this theory is claimed to agree with the observed Cosmic Microwave Background and matter power spectra. We convert the background cosmological equations of the theory to a set of
Kashfi, Tahere, Roshan, Mahmood
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About the Infinite Repetition of Histories in Space
Theoria, 2014 This paper analyzes two different proposals, one by Ellis and Brundrit, based on classical relativistic cosmology, the other by Garriga and Vilenkin, based on the DH interpretation of quantum mechanics, both concluding that, in an infinite universe ...
Manuel Alfonseca +1 more
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Integration the relativistic wave equations in Bianchi IX cosmology model [PDF]
Компьютерные исследования и моделирование, 2016 We consider integration Clein-Gordon and Dirac equations in Bianchi IX cosmology model. Using the noncommutative integration method we found the new exact solutions for Taub universe. Noncommutative integration method for Bianchi IX model is based on the
Alexander Igorevich Breev +2 more
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