Zobrazeno 1 - 10
of 220
pro vyhledávání: '"Kofinas, G"'
Publikováno v:
JHEP 1005:055,2010
The emitted energy and the cross-section of classical scalar bremsstrahlung in massive particle collisions in D=4+d dimensional Minkowski space M_D as well as in the brane world M_4 \times T^d is computed to leading ultra-relativistic order. The part
Externí odkaz:
http://arxiv.org/abs/1003.2982
Publikováno v:
JHEP 0601 (2006) 107
The role of brane-bulk energy exchange and of an induced gravity term on a single braneworld of negative tension and vanishing effective cosmological constant is studied. It is shown that for the physically interesting cases of dust and radiation a u
Externí odkaz:
http://arxiv.org/abs/hep-th/0510207
Autor:
Kehagias, A., Kofinas, G.
Publikováno v:
Class.Quant.Grav. 21 (2004) 3871-3886
We examine in the context of general relativity the dynamics of a spatially flat Robertson-Walker universe filled with a classical minimally coupled scalar field \phi of exponential potential ~ e^{-\mu\phi} plus pressureless baryonic matter. This sys
Externí odkaz:
http://arxiv.org/abs/gr-qc/0402059
Autor:
Kofinas, G., Papantonopoulos, E.
Publikováno v:
JCAP 0412 (2004) 011
We study the collapse of a homogeneous braneworld dust cloud in the context of the various curvature correction scenarios, namely, the induced-gravity, the Gauss-Bonnet, and the combined induced-gravity and Gauss-Bonnet. In accordance to the Randall-
Externí odkaz:
http://arxiv.org/abs/gr-qc/0401047
Publikováno v:
JHEP0310:066,2003
We study the cosmology of the Randall-Sundrum brane-world where the Einstein-Hilbert action is modified by curvature correction terms: a four-dimensional scalar curvature from induced gravity on the brane, and a five-dimensional Gauss-Bonnet curvatur
Externí odkaz:
http://arxiv.org/abs/hep-th/0307138
Publikováno v:
Astrophys.Space Sci.283:685-690,2003
An analysis of a spherically symmetric braneworld configuration is performed when the intrinsic curvature scalar is included in the bulk action. In the case when the electric part of the Weyl tensor is zero, all the exterior solutions are found; one
Externí odkaz:
http://arxiv.org/abs/hep-th/0210006
Publikováno v:
Phys.Rev.D66:104028,2002
We extent our previous study on spherically symmetric braneworld solutions with induced gravity, including non-local bulk effects. We find the most general static four-dimensional black hole solutions with g_{tt}=-g_{rr}^{-1}. They satisfy a closed s
Externí odkaz:
http://arxiv.org/abs/hep-th/0208207
Publikováno v:
JHEP0302:035,2003
The consequences for the brane cosmological evolution of energy exchange between the brane and the bulk are analysed in detail, in the context of a non-factorizable background geometry with vanishing effective cosmological constant on the brane. A ri
Externí odkaz:
http://arxiv.org/abs/hep-th/0207060
Publikováno v:
Phys.Rev.D66:104014,2002
An analysis of a spherically symmetric braneworld configuration is performed when the intrinsic curvature scalar is included in the bulk action; the vanishing of the electric part of the Weyl tensor is used as the boundary condition for the embedding
Externí odkaz:
http://arxiv.org/abs/hep-th/0112019
Publikováno v:
Phys.Lett.B514:149-154,2001
The quantization of Class A Bianchi Type VI and VII geometries -with all six scale factors, as well as the lapse function and the shift vector present- is considered. A first reduction of the initial 6-dimensional configuration space is achieved by t
Externí odkaz:
http://arxiv.org/abs/gr-qc/0101103