Self-gravitating global monopole and nonsingular cosmology

Details Self-gravitating global monopole and nonsingular cosmology Self-gravitating global monopole and nonsingular cosmology

2003-10-30

arxiv.org/abs/gr-qc/0310126v1

EconfC0306234:649-653,2003

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, uses snmp2003 style. Submitted to the Proceedings of Symmetry 2003 Conference (Kiev, June 2003)

Scientific paper

We review some recent results concerning the properties of a spherically symmetric global monopole in $(D=d+2)$-dimensional general relativity. Some common features of monopole solutions are found independently of the choice of the symmetry-breaking potential. Thus, the solutions show six types of qualitative behavior and can contain at most one simple horizon. For the standard Mexican hat potential, we analytically find the $D$-dependent range of $\gamma$ (the gravitational field strength parameter) in which there exist globally regular solutions with a monotonically growing Higgs field, containing a horizon and a Kantowski-Sachs (KS) cosmology outside it, where the topology of spatial sections is $\R\times \S^d$. Their cosmological properties favor the idea that the standard Big Bang might be replaced with a nonsingular static core and a horizon appearing as a result of some symmetry-breaking phase transition on the Planck energy scale. We have also found families of new solutions with an oscillating Higgs field, parametrized by the number of its knots. All such solutions describe space-times of finite size, possessing a regular center, a horizon and a singularity beyond it.

Affiliated with

Also associated with

No associations

Rating

Self-gravitating 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 Self-gravitating global monopole and nonsingular cosmology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-gravitating global monopole and nonsingular cosmology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-250621