Results 41 to 50 of about 738,678 (282)
Two-fluid dark matter models [PDF]
Physical Review D, 2011 6 pages, two figures, accepted for publication in ...
Lobo, FSN, Harko, T
openaire +4 more sources
Little Rip and Pseudo Rip Phenomena from Coupled Dark Energy [PDF]
, 2013 We consider Little Rip (LR) and Pseudo Rip (PR) cosmological models with two interacting ideal fluids, corresponding to dark energy and dark matter. The interaction between the dark energy and the dark matter fluid components is described in terms of the
Brevik, I. +2 more
core +1 more source
Generalized Almost Schouten Solitons in LP-Sasakian Geometry and Relativistic Spacetimes
AppliedMathThe objective of this work is to characterize certain geometric aspects of LP-Sasakian (LPS) manifolds admitting a generalized almost Schouten soliton (GASS) and to prove that a such manifold with GASS is of constant scalar curvature.
Sunil Kumar Yadav +2 more
doaj +1 more source
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
openaire +3 more sources
Dark Energy from Wet Dark Fluid
, 2004 11 pages JHEP 6 figures; v2 added references, candidate microphysical model and edited to conserve length; v3 major revision: images enlarged, paper extended to include new discussion and ...
Holman, Richard, Naidu, Siddartha
openaire +2 more sources
The Unifying Dark Fluid Model [PDF]
AIP Conference Proceedings, 2010 The standard model of cosmology relies on the existence of two components, "dark matter" and "dark energy", which dominate the expansion of the Universe. There is no direct proof of their existence, and their nature is still unknown. Many alternative models suggest other cosmological scenarios, and in particular the dark fluid model replace the dark ...
Alexandre Arbey +2 more
openaire +2 more sources
Making (dark matter) waves: Untangling wave interference for multi-streaming dark matter
The Open Journal of Astrophysics, 2022 The classical dynamics of collisionless cold dark matter, commonly described by fluid variables or a phase-space distribution, can be captured in a single semiclassical wavefunction.
Alex Gough, Cora Uhlemann
doaj +1 more source
Teleparallelism by inhomogeneous dark fluid [PDF]
Astrophysics and Space Science, 2015 In this paper, we investigate $f(T)$ cosmology and find an exact solution for $f$ which gives a Little Rip cosmology. Also, considering accelerating cosmology with dark matter, the time-dependent solution is found. For these cases, by using solutions obtained from $f(T)$ gravity we find expressions for $ $ and $ $ defined as time functions via ...
Güdekli, Ertan +2 more
openaire +2 more sources
Analytic fluid approximation for warm dark matter
Astroparticle Physics, 2023 16 pages, 5 ...
Jorge Mastache, Axel de la Macorra
openaire +2 more sources
Interacting dark fluid in the universe bounded by event horizon : A non-equilibrium prescription
, 2014 A non-equilibrium thermodynamic analysis has been done for the interacting dark fluid in the universe bounded by the event horizon.From observational evidences it is assumed that at present the matter in the universe is dominated by two dark sectors-dark
Biswas, Atreyee, Chakraborty, Subenoy
core +1 more source