Results 71 to 80 of about 3,373,254 (352)

Making (dark matter) waves: Untangling wave interference for multi-streaming dark matter

open access: yesThe 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

Phase space analysis and singularity classification for linearly interacting dark energy models

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
In this paper, applying the Hartman–Grobman theorem we carry out a qualitative late-time analysis of some unified dark energy-matter Friedmann cosmological models, where the two interact through linear energy exchanges, and the dark energy fluid obeys to
Muhsin Aljaf   +2 more
doaj   +1 more source

The Fate of the Universe: Dark Energy Dilution? [PDF]

open access: yes, 2007
We study the possibility that dark energy decays in the future and the universe stops accelerating. The fact thatthe cosmological observations prefer an equation of state of dark energy smaller than -1 can be a signal that dark energy will decay in the ...
de la Macorra, A.
core   +2 more sources

A coupled-fluid approach to explore bounce and inflationary cosmology with Barrow holographic as the driving dark fluid

open access: yesThe European Physical Journal C
Assuming that viscous fluid in the form of Barrow holographic dark energy (BHDE) (a particular case of more generalized version of HDE elaborated in Nojiri et al.
Sanghati Saha   +2 more
semanticscholar   +1 more source

Test the weak cosmic supervision conjecture in dark matter-black hole system

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
There is a possibility that the event horizon of a Kerr-like black hole with perfect fluid dark matter (DM) can be destroyed, providing a potential opportunity for understanding the weak cosmic censorship conjecture of black holes.
Liping Meng, Zhaoyi Xu, Meirong Tang
doaj   +1 more source

Thermodynamic aspects of dark energy fluids [PDF]

open access: yesPhysical Review D, 2015
7 pages, 1 figure, 1 table. This an updated version of the article originally named "Is this the end of dark energy?"
Edésio M. Barboza   +5 more
openaire   +3 more sources

Accretion onto a static spherically symmetric regular MOG dark compact object

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
In astrophysics, the process of a massive body acquiring matter is referred to as accretion. The extraction of gravitational energy occurs as a result of the infall.
Kourosh Nozari   +2 more
doaj   +1 more source

Irreversible thermodynamic description of interacting dark energy - dark matter cosmological models

open access: yes, 2013
We investigate the interaction between dark energy and dark matter in the framework of irreversible thermodynamics of open systems with matter creation/annihilation.
Harko, Tiberiu, Lobo, Francisco S. N.
core   +1 more source

New limit on logotropic unified dark energy models

open access: yesPhysics Letters B, 2017
A unification of dark matter and dark energy in terms of a logotropic perfect dark fluid has recently been proposed, where deviations with respect to the standard ΛCDM model are dependent on a single parameter B.
V.M.C. Ferreira, P.P. Avelino
doaj   +1 more source

Unified Dark Fluid with Constant Adiabatic Sound Speed and Cosmic Constraints

open access: yes, 2012
As is known above 90% of the energy content in Universe is made of unknown dark component. Usually this dark fluid is separated into two parts: dark matter and dark energy.
Noh, Hyerim, Wang, Yuting, Xu, Lixin
core   +1 more source

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