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
2018 ◽  
Vol 33 (23) ◽  
pp. 1850132 ◽  
Author(s):  
Hasrat Hussain Shah ◽  
Farook Rahaman

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.


2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
A. Herrera-Aguilar ◽  
A. M. Kuerten ◽  
Roldão da Rocha

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.


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

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

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

2009 ◽  
Vol 18 (12) ◽  
pp. 1809-1819
Author(s):  
ENRICO RODRIGO

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.


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

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

2004 ◽  
Vol 70 (8) ◽  
Author(s):  
Nobuchika Okada ◽  
Osamu Seto

Sign in / Sign up

Export Citation Format

Share Document