Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2003-01-22
J.Exp.Theor.Phys. 97 (2003) 1-9; Zh.Eksp.Teor.Fiz. 97 (2003) 5-13
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
10 pages, 5 figures
Scientific paper
10.1134/1.1600791
We consider a spherically symmetric global monopole in general relativity in $(D=d+2)$-dimensional spacetime. The monopole is shown to be asymptotically flat up to a solid angle defect in case $\gamma < d-1$, where $\gamma$ is a parameter characterizing the gravitational field strength. In the range $d-1< \gamma < 2d(d+1)/(d+2)$ the monopole space-time contains a cosmological horizon. Outside the horizon the metric corresponds to a cosmological model of Kantowski-Sachs type, where spatial sections have the topology ${\R\times \S}^d$. In the important case when the horizon is far from the monopole core, the temporal evolution of the Kantowski-Sachs metric is described analytically. The Kantowski-Sachs space-time contains a subspace with a $(d+1)$-dimensional Friedmann-Robertson-Walker metric, and its possible cosmological application is discussed. Some numerical estimations in case $d=3$ are made showing that this class of nonsingular cosmologies can be viable. Other results, generalizing those known in the 4-dimensional space-time, are derived, in particular, the existence of a large class of singular solutions with multiple zeros of the Higgs field magnitude.
Bronnikov Kirill A.
Meierovich Boris E.
No associations
LandOfFree
Multidimensional Global Monopole and Nonsingular Cosmology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Multidimensional Global Monopole and Nonsingular Cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multidimensional Global Monopole and Nonsingular Cosmology will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-198897