Results 71 to 80 of about 3,411,153 (359)
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 fluid: A complex scalar field to unify dark energy and dark matter [PDF]
Physical Review D, 2006 9 pages, 3 figures, references added, minor corrections and ...
openaire +2 more sources
The European Physical Journal CAssuming 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
Phase space analysis and singularity classification for linearly interacting dark energy models
European 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 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
Irreversible thermodynamic description of interacting dark energy - dark matter cosmological models
, 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
Dark viscous fluid coupled with dark matter and future singularity [PDF]
The European Physical Journal C, 2010 11 ...
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Unified Dark Fluid with Constant Adiabatic Sound Speed and Cosmic Constraints
, 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
The Fate of the Universe: Dark Energy Dilution? [PDF]
, 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.
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Test the weak cosmic supervision conjecture in dark matter-black hole system
European 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