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pro vyhledávání: '"Bleyer, U."'
We consider multidimensional cosmological models with a generalized space-time manifold M = R x M_1 ...x M_n, composed from a finite number of factor spaces M_i, i=1,..n. While usually each factor space M_i is considered to be some Riemannian space o
Externí odkaz:
http://arxiv.org/abs/gr-qc/9508035
Autor:
BLEYER, U., RAINER, M.
We consider a multidimensional model of the universe given as a $D$-dimensional geometry, represented by a Riemannian manifold $(M,g)$ with arbitrary signature of $g$, $M= \R\times M_1\times \cdots \times M_n$, where the $M_i$ of dimension $d_i$ are
Externí odkaz:
http://arxiv.org/abs/gr-qc/9503019
We consider a multidimensional universe with the topology $M= \R\times M_1\times \cdots \times M_n$, where the $M_i$ ($i>1$) are $d_i$-dimensional Ricci flat spaces. Exploiting a conformal equivalence between minimal coupling models and conformal cou
Externí odkaz:
http://arxiv.org/abs/gr-qc/9503018
Autor:
Bleyer, U., Zhuk, A.
Multidimensional cosmological models with $n (n > 1)$ spaces of constant curvature are discussed classically and with respect to canonical quantization. These models are integrable in the case of Ricci flat internal spaces. For positive curvature in
Externí odkaz:
http://arxiv.org/abs/gr-qc/9405028
Autor:
Bleyer, U., Zhuk, A.
Mutidimensional cosmological models with $n\left( n\geq 2\right) $ Einstein spaces $M_i\left( i=1,\ldots ,n\right) $ are investigated. The cosmological constant and homogeneous minimally coupled scalar field as a matter sources are considered. The sc
Externí odkaz:
http://arxiv.org/abs/gr-qc/9405022
Exact static, spherically symmetric solutions to the Einstein-Maxwell-scalar equations, with a dilatonic-type scalar-vector coupling, in $D$-dimensional gravity with a chain of $n$ Ricci-flat internal spaces are considered. Their properties and speci
Externí odkaz:
http://arxiv.org/abs/gr-qc/9405021
Autor:
Bleyer, U., Zhuk, A.
Multidimensional cosmological models with $n~(n > 1)$ Einstein spaces are discussed classically and with respect to canonical quantization. These models are integrable in the case of Ricci flat internal spaces. For negative curvature of the external
Externí odkaz:
http://arxiv.org/abs/gr-qc/9405019
Publikováno v:
Nucl.Phys. B429 (1994) 177-204
A multidimensional cosmological model with space-time consisting of $n (n \ge 2)$ Einstein spaces $M_{i}$ is investigated in the presence of a cosmological constant $\Lambda$ and a homogeneous minimally coupled scalar field $\varphi(t)$ as a matter s
Externí odkaz:
http://arxiv.org/abs/gr-qc/9405020
Autor:
Bleyer, U., Ivashchuk, V.
Publikováno v:
Phys.Lett.B332:292-296,1994
The multidimensional charged dilatonic black hole solution with $n$ internal Ricci-flat spaces is considered. The bound on the mass of the black hole is obtained. In the strong dilatonic coupling limit the critical mass becomes zero. The case $n = \i
Externí odkaz:
http://arxiv.org/abs/gr-qc/9405018
Consider multidim. universes M= R x M_1 x ... x M_n with D = 1+ d_1 .. + d_n, where M_i of dimension d_i are of have constant curvature and compact for i>1. For Lagrangian models L(R,phi) on M which depend only on Ricci curvature R and a scalar field
Externí odkaz:
http://arxiv.org/abs/gr-qc/9405011