Dark matter and dark radiation in brane world cosmology and its observational test in the BBN, CMB and supernovae

2005 ◽  
Vol 138 ◽  
pp. 82-85
Author(s):  
T. Kajino ◽  
F.K. Ichiki ◽  
P.M. Garnavich ◽  
G.J. Mathews ◽  
M. Yahiro
Keyword(s):  
Dark Matter ◽  
Brane World ◽  
Dark Radiation ◽  
Observational Test

Gravitational collapse of interacting combination of dark matter and dark energy in the context of brane world regime

2018 ◽  
Vol 33 (23) ◽  
pp. 1850132 ◽  
Author(s):  
Hasrat Hussain Shah ◽  
Farook Rahaman
Keyword(s):  
Dark Matter ◽  
Dark Energy ◽  
Gravitational Collapse ◽  
Energy Momentum Tensor ◽  
Momentum Tensor ◽  
Brane World ◽  
Anisotropic Pressure ◽  
Isotropic Pressure ◽  
Polytropic Equation ◽  
De Formula

In the scenario of an optimal consideration that is, homogeneous and flat spacetime, we study the Black Hole (BH) formation from the gravitational collapse of a spherical symmetric clump of matter in the case of the specific Dark Matter (DM) model interacting with Dark Energy (DE) in the context of the brane world regime. This clump of matter constituted of DM, [Formula: see text] and DE, [Formula: see text]. In the present model, we consider anisotropic pressure in the energy–momentum tensor with a polytropic equation of state (EoS), [Formula: see text] and [Formula: see text], [Formula: see text]. Our results show that the gravitational collapse of an interacting combination of DM and DE leads to the formation of BH in the presence of brane tension. Recent work provides the generalization of isotropic pressure to an-isotropic pressure in the energy–momentum tensor for the specific interacting combination model of DM and DE in a brane world regime.

scholarly journals Regular Bulk Solutions in Brane-Worlds with Inhomogeneous Dust and Generalized Dark Radiation

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
A. Herrera-Aguilar ◽  
A. M. Kuerten ◽  
Roldão da Rocha
Keyword(s):  
Time Evolution ◽  
Brane World ◽  
Radiation Parameter ◽  
Black String ◽  
String Solution ◽  
Dark Radiation ◽  
Brane Worlds ◽  
Bulk Solutions ◽  
Matter Fields

From the dynamics of a brane-world with matter fields present in the bulk, the bulk metric and the black string solution near the brane are generalized, when both the dynamics of inhomogeneous dust/generalized dark radiation on the brane-world and inhomogeneous dark radiation in the bulk as well are considered as exact dynamical collapse solutions. Based on the analysis on the inhomogeneous static exterior of a collapsing sphere of homogeneous dark radiation on the brane, the associated black string warped horizon is studied, as well as the 5D bulk metric near the brane. Moreover, the black string and the bulk are shown to be more regular upon time evolution, for suitable values for the dark radiation parameter in the model, by analyzing the soft physical singularities.

scholarly journals Dark matter and dark radiation

2009 ◽  
Vol 79 (2) ◽  
Author(s):  
Lotty Ackerman ◽  
Matthew R. Buckley ◽  
Sean M. Carroll ◽  
Marc Kamionkowski
Keyword(s):  
Dark Matter ◽  
Dark Radiation

scholarly journals Asymmetric Dark Matter and Dark Radiation

2012 ◽  
Vol 2012 (07) ◽  
pp. 022-022 ◽  
Author(s):  
Mattias Blennow ◽  
Enrique Fernandez Martinez ◽  
Olga Mena ◽  
Javier Redondo ◽  
end Paolo Serra
Keyword(s):  
Dark Matter ◽  
Dark Radiation ◽  
Asymmetric Dark Matter

scholarly journals Dark radiation constraints on mixed Axion/Neutralino dark matter

2013 ◽  
Vol 2013 (04) ◽  
pp. 041-041 ◽  
Author(s):  
Kyu Jung Bae ◽  
Howard Baer ◽  
Andre Lessa
Keyword(s):  
Dark Matter ◽  
Dark Radiation

scholarly journals DENOUEMENT OF A WORMHOLE–BRANE ENCOUNTER

2009 ◽  
Vol 18 (12) ◽  
pp. 1809-1819
Author(s):  
ENRICO RODRIGO
Keyword(s):  
Black Holes ◽  
Dark Matter ◽  
Brane World ◽  
Dark Matter Candidate ◽  
Brane Worlds ◽  
Higher Dimensional ◽  
The Creation ◽  
World Ethos ◽  
Baby Universe

Higher-dimensional black holes have long been considered within the context of brane worlds. Recently, it was shown that the brane-world ethos also permits the consideration of higher-dimensional wormholes. When such a wormhole, pre-existing in the bulk, impinges upon our universe, taken to be a positive-tension three-brane, it can induce the creation in our universe of a wormhole of ordinary dimensionality. The throat of this wormhole might fully constrict, pinch off, and thus birth a baby universe. Alternatively, the induced wormhole might persist. I show that persistence is more likely and note that the persistent wormhole manifests itself as a particle-like object whose interaction with cosmic matter is purely gravitational. I consider the viability of this object as a dark matter candidate.

scholarly journals Dark Radiation or Warm Dark Matter from long lived particle decays in the light of Planck

2013 ◽  
Vol 724 (1-3) ◽  
pp. 77-83 ◽  
Author(s):  
Pasquale Di Bari ◽  
Stephen F. King ◽  
Alexander Merle
Keyword(s):  
Dark Matter ◽  
Dark Radiation ◽  
Particle Decays

scholarly journals Residual non-Abelian dark matter and dark radiation

2017 ◽  
Vol 768 ◽  
pp. 12-17 ◽  
Author(s):  
P. Ko ◽  
Yong Tang
Keyword(s):  
Dark Matter ◽  
Dark Radiation

scholarly journals Relic density of dark matter in brane world cosmology

2004 ◽  
Vol 70 (8) ◽  
Author(s):  
Nobuchika Okada ◽  
Osamu Seto
Keyword(s):  
Dark Matter ◽  
Brane World ◽  
Relic Density
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