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Dark matter, dark energy, and dark radiation coupled with a transversal interaction
(American Physical Society, 2012-11)
We investigate a cosmological scenario with three interacting components that includes dark matter, dark energy, and radiation in the spatially flat Friedmann-Robertson-Walker universe. We introduce a 3-dimensional internal ...
Nonbaryonic dark matter and scalar field coupled with a transversal interaction plus decoupled radiation
(Springer, 2013-04-17)
We analyze a universe filled with interacting dark matter, a scalar field accommodated as dark radiation along with dark energy plus a decoupled radiation term within the framework of the spatially flat Friedmann-Robertson-Walker ...
ACCRETION MECHANISMS ONTO PRIMORDIAL BLACK HOLES
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2010)
We study the evolution of a primordial black hole (PBH) taking into account the presence of dark energy modeled by a general perfect fluid. In the specific case of a stationary non-self-gravitating test fluid, the competition ...
Testing creation cold dark matter cosmology with the radiation temperature–redshift relation
(2019-02-01)
The standard ΛCDM model can be mimicked at the background and perturbative levels (linear and non-linear) by a class of gravitationally induced particle production cosmology dubbed CCDM cosmology. However, the radiation ...
Interacting dark sector with variable vacuum energy
(Amer Physical Soc, 2013-10)
We examine a cosmological scenario where dark matter is coupled to a variable vacuum energy while baryons and photons are two decoupled components for a spatially flat Friedmann-Robertson-Walker spacetime. We apply the χ2 ...
A dark radiation era prior to the inflationary phase
(ELSEVIER SCIENCE B.V., 2009)
Predictive model for radiatively induced neutrino masses and mixings with dark matter
(AMER PHYSICAL SOC, 2013)
Limits in late time conversion of cold dark matter into dark radiation
(Iop Publishing LtdBristolInglaterra, 2013)
Evaporating primordial black holes as varying dark energy
(Elsevier, 2020)
If light enough primordial black holes (PBH) account for dark matter, then its density decreases with time as they lose mass via Hawking radiation. We show that this time-dependence of the matter density can be formulated ...