Results 11 to 20 of about 1,836,799 (336)
Dark energy without dark energy [PDF]
AIP Conference Proceedings, 2006 It is proposed that the current acceleration of the universe is not originated by the existence of a mysterious dark energy fluid nor by the action of extra terms in the gravity Lagrangian, but just from the sub-quantum potential associated with the CMB ...
Gonzalez-Diaz, Pedro F.
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Physics Letters B, 2019 The paper brings a novel approach to unification of dark matter and dark energy in terms of a cosmic fluid. A model is introduced in which the cosmic fluid speed of sound squared is defined as a function of its equation of state (EoS) parameter.
Dalibor Perković, Hrvoje Štefančić
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Dark Energy and Dark Matter [PDF]
Physics Letters B, 2003 It is a puzzle why the densities of dark matter and dark energy are nearly equal today when they scale so differently during the expansion of the universe. This conundrum may be solved if there is a coupling between the two dark sectors. In this paper we
A. Riotto +30 more
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Holographic Dark Information Energy: Predicted Dark Energy Measurement [PDF]
Entropy, 2013 Several models have been proposed to explain the dark energy that is causing universe expansion to accelerate. Here the acceleration predicted by the Holographic Dark Information Energy (HDIE) model is compared to the acceleration that would be produced ...
Michael Paul Gough
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Journal of Physics: Conference Series, 2011 We review the problem of dark energy, including a survey of theoretical models and some aspects of numerical studies.Comment: 185 pages, 29 figures, 8 tables, more references added.
Li, Miao +3 more
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Physical Review D, 2004 We explore the physics of a gas of particles interacting with a condensate that spontaneously breaks Lorentz invariance. The equation of state of this gas varies from 1/3 to less than -1 and can lead to the observed cosmic acceleration. The particles are
Boss, A. P. +6 more
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Journal of Cosmology and Astroparticle Physics, 2008 Exploring the diversity of dark energy dynamics, we discover a calibration relation, a uniform stretching of the amplitude of the equation of state time variation with scale factor. This defines homogeneous families of dark energy physics.
de Putter, Roland, Linder, Eric V.
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Classical and Quantum Gravity, 2012 In the present work, we reconsider the idea of holographic dark energy. One of its key points is the formation of the black hole. And then, we propose the so-called "pilgrim dark energy" based on the speculation that the repulsive force contributed by ...
Wei, Hao
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Dipolar Dark Matter and Dark Energy [PDF]
Physical Review D, 2009 In previous work [L. Blanchet and A. Le Tiec, Phys. Rev. D 78, 024031 (2008)], a model of dark matter and dark energy based on the concept of gravitational polarization was investigated.
A. Lichnerowicz +4 more
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Physical Review D, 2020 We present a novel source of dark energy, which is motivated by the prevalence of hidden sectors in string theory models and is consistent with all of the proposed swampland conjectures. Thermal effects hold a light hidden sector scalar at a point in field space that is not a minimum of its zero temperature potential.
Edward Hardy, Susha Parameswaran
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