Results 11 to 20 of about 3,462 (164)
FLRW Cosmological Models with Dynamic Cosmological Term in Modified Gravity
Universe, 2021 Although the standard lambda cold dark matter cosmological model is quite successful in describing the universe, there are still several issues that are still not resolved.
Rishi Kumar Tiwari +2 more
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Singularities in Inflationary Cosmological Models
Universe, 2021 Due to the accelerated expansion of the universe, the possibilities for the formation of singularities has changed from the classical Big Bang and Big Crunch singularities to include a number of new scenarios. In recent papers it has been shown that such
Leonardo Fernández-Jambrina
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Errant Man: The Importance of Cosmological Models in Culture [PDF]
Философия и космология, 2019 The author considers the meanings of the term “errant man” in the paper. The birth of man is his abandonment in being and wandering in it. It is important that wandering in being have direction, the source that drives man, forms the authenticity ...
Iryna Dobroskok
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Crossing of Phantom Divide Line in Model of Interacting Tsallis Holographic Dark Energy
Universe, 2022 We consider a Tsallis holographic dark energy model with interaction between dark energy and matter. The density of dark energy is taken as ρd∼3C2/L4−2γ, where C, γ are constants. The event horizon is chosen as the characteristic scale L.
Artyom V. Astashenok +1 more
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Quantum cosmological models [PDF]
Classical and Quantum Gravity, 2005 revised: now includes time asymmetry, black hole final state etc, 71 ...
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Homogeneous Cosmological Models in Weyl’s Geometrical Scalar–Tensor Theory
Universe, 2023 In this paper, we consider homogeneous cosmological solutions in the context of the Weyl geometrical scalar–tensor theory. Firstly, we exhibit an anisotropic Kasner type solution taking advantage of some similarities between this theory and the Brans ...
Adriano Barros, Carlos Romero
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Physics, 2021 In this paper, the effects of the quantum metric fluctuations on the background cosmological dynamics of the universe are considered. To describe the quantum effects, the metric is assumed to be given by the sum of a classical component and a fluctuating
Zahra Haghani, Tiberiu Harko
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Cosmological Model with Ω M -Dependent Cosmological Constant [PDF]
General Relativity and Gravitation, 2003 The idea here is to set the cosmical constant $ $ proportional to the scalar of the stress-energy tensor of the ordinary matter. We investigate the evolution of the scale factor in a cosmological model in which the cosmological constant is proportional to the scalar of the stress-energy tensor.
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Rip Cosmology via Inhomogeneous Fluid
Galaxies, 2013 The conditions for the appearance of the Little Rip, Pseudo Rip and Quasi Rip universes in the terms of the parameters in the equation of state of some dark fluid are investigated. Several examples of the Rip cosmologies are investigated.
Alexander V. Timoshkin +2 more
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, 2001 6 pages, gc.sty; to appear in special issue of Gravitation and Cosmology (G@C) devoted to Quantum Gravity, Unified Models and Strings to mark 100th anniversary of Tomsk State Pedagogical University, Ed. Prof. S.
Aceves de la Cruz, F. +3 more
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