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Electrodynamics of a Cosmic Dark Fluid [PDF]
Symmetry, 2016 Cosmic Dark Fluid is considered as a non-stationary medium, in which electromagnetic waves propagate, and magneto-electric field structures emerge and evolve.
A. Balakin
semanticscholar +10 more sources
Viscous dark fluid universe [PDF]
Physical Review D, 2010 We investigate the cosmological perturbation dynamics for a universe consisting of pressureless baryonic matter and a viscous fluid, the latter representing a unified model of the dark sector. In the homogeneous and isotropic background the \textit{total} energy density of this mixture behaves as a generalized Chaplygin gas.
Wiliam S. Hipólito-Ricaldi +2 more
core +5 more sources
A viable dark fluid model [PDF]
Astrophysics and Space Science, 2017 We consider a cosmological model based on a generalization of the equation of state proposed by Nojiri and Odintsov (2004) and Štefančić (2005, 2006).
Esraa Elkhateeb
semanticscholar +6 more sources
The Logotropic Dark Fluid as a unification of dark matter and dark energy [PDF]
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
doaj +4 more sources
The logotropic dark fluid: Observational and thermodynamic constraints [PDF]
International Journal of Modern Physics D, 2020 We have considered a spatially flat, homogeneous and isotropic FLRW Universe filled with a single fluid, known as logotropic dark fluid (LDF), whose pressure evolves through a logarithmic equation of state.
Abdulla Al Mamon, Subhajit Saha
semanticscholar +6 more sources
Inhomogeneous Dark Fluid and Dark Matter, Leading to a Bounce Cosmology [PDF]
Universe, 2015 The purpose of this short review is to describe cosmological models with a linear inhomogeneous time-dependent equation of state (EoS) for dark energy, when dark fluid is coupled with dark matter. This may lead to a bounce cosmology.
Iver Brevik, А. В. Тимошкин
semanticscholar +7 more sources
Unifying dark matter, dark energy and inflation with a fuzzy dark fluid [PDF]
Journal of Cosmology and Astroparticle Physics, 2020 Scalar fields appear in many cosmological models, in particular in order to provide explanations for dark energy and inflation, but also to emulate dark matter.
A. Arbey, J.-F. Coupechoux
semanticscholar +7 more sources
The Astrophysical Journal, 2000 Dark matter modeled as a classical scalar field that interacts only with gravity and with itself by a potential that is close to quartic at large field values and approaches a quadratic form when the field is small would be gravitationally produced by inflation and at the present epoch could act like an ideal fluid with pressure that is a function only
P. J. E. Peebles
openalex +4 more sources
On isotropic turbulence in the dark fluid universe [PDF]
The European Physical Journal C, 2011 As first part of this work, experimental information about the decay of isotropic turbulence in ordinary hydrodynamics, u^2(t) proportional to t^{-6/5}, is used as input in FRW equations in order to investigate how an initial fraction f of turbulent kinetic energy in the cosmic fluid influences the cosmological development in the late, quintessence ...
Iver Brevik +3 more
openalex +7 more sources
Circular orbits and accretion disk around AdS black holes surrounded by dark fluid with Chaplygin-like equation of state [PDF]
The European Physical Journal C, 2023 In the present work we study the geodesic motion and accretion process of a test particle near an Anti-de Sitter (ADS) BH surrounded by a dark fluid with a Chaplygin-like equation.
G. Mustafa +4 more
openalex +3 more sources