Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1994-03-31
Phys.Rev. D51 (1995) 4330-4336
Physics
High Energy Physics
High Energy Physics - Theory
15 pages Latex, NORDITA 94/14-P
Scientific paper
10.1103/PhysRevD.51.4330
It was shown by Garriga and Vilenkin that the circular shape of nucleated cosmic strings, of zero loop-energy in de Sitter space, is stable in the sense that the ratio of the mean fluctuation amplitude to the loop radius is constant. This result can be generalized to all expanding strings (of non-zero loop-energy) in de Sitter space. In other curved spacetimes the situation, however, may be different. In this paper we develop a general formalism treating fluctuations around circular strings embedded in arbitrary spatially flat FRW spacetimes. As examples we consider Minkowski space, de Sitter space and power law expanding universes. In the special case of power law inflation we find that in certain cases the fluctuations grow much slower that the radius of the underlying unperturbed circular string. The inflation of the universe thus tends to wash out the fluctuations and to stabilize these strings.
No associations
LandOfFree
Stable and Unstable Circular Strings in Inflationary Universes 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 Stable and Unstable Circular Strings in Inflationary Universes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stable and Unstable Circular Strings in Inflationary Universes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-254007