Results 11 to 20 of about 738,678 (282)
Unified dark fluid in Brans-Dicke theory [PDF]
The European Physical Journal C, 2015 Anisotropic dark energy cosmological models are constructed in the frame work of generalised Brans-Dicke theory with a self interacting potential. Wet dark fluid characterized by a linear equation of state is considered as the source of dark energy ...
Behera, Dipanjali +2 more
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The Logotropic Dark Fluid as a unification of dark matter and dark energy
Physics Letters B, 2016 We propose a heuristic unification of dark matter and dark energy in terms of a single “dark fluid” with a logotropic equation of state P=Aln(ρ/ρP), where ρ is the rest-mass density, ρP=5.16×1099gm−3 is the Planck density, and A is the logotropic ...
Pierre-Henri Chavanis
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Holographic Dark Energy from Fluid/Gravity Duality Constraint by Cosmological Observations
Physics of the Dark Universe, 2018 In this paper, we obtain a holographic model of dark energy using the fluid/gravity duality. This model will be dual to a higher dimensional Schwarzschild black hole, and we would use fluid/gravity duality to relate to the parameters of this black hole ...
Abreu, Everton M. C. +3 more
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Effective fluid description of the dark universe
Physics Letters B, 2018 We propose an effective anisotropic fluid description for a generic infrared-modified theory of gravity. In our framework, the additional component of the acceleration, commonly attributed to dark matter, is explained as a radial pressure generated by ...
M. Cadoni +4 more
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The nature of phantom dark energy and its relation to time crystals [PDF]
Scientific ReportsIn this letter we show that, at its fundamental level, phantom dark energy is a fluid made up of time crystals that permeate the fabric of space-time.
Laura Mersini-Houghton
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General Relativistic Space-Time with η1-Einstein Metrics
Mathematics, 2022 The present research paper consists of the study of an η1-Einstein soliton in general relativistic space-time with a torse-forming potential vector field.
Yanlin Li +4 more
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The Formulation of Scaling Expansion in an Euler-Poisson Dark-Fluid Model
Universe, 2023 We present a dark fluid model described as a non-viscous, non-relativistic, rotating, and self-gravitating fluid. We assume that the system has spherical symmetry and that the matter can be described by the polytropic equation of state.
Balázs Endre Szigeti +2 more
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Self-Similar Solutions of a Gravitating Dark Fluid
Mathematics, 2022 In this paper, a fluid model is presented which contains the general linear equation of state including the gravitation term. The obtained spherical symmetric Euler equation and the continuity equations were investigated with the Sedov-type time ...
Imre Ferenc Barna +2 more
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Thermodynamical analysis of charged rotating black hole surrounded by perfect fluid dark matter
Nuclear Physics B, 2023 This paper is devoted to studying thermodynamics and particle acceleration around charged rotating BHs surrounded by perfect fluid dark matter. In the beginning, we discuss BH horizons, ergosphere and inner stable circular orbits in the framework of ...
Gulzoda Rakhimova +4 more
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WMJ (Warmadewa Medical Journal), 2023 This research centers on Brain MRI examinations in patients with clinical epilepsy, featuring the incorporation of an additional T2 SPACE dark fluid sequence.
Legia Prananto +2 more
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