Exact String Solutions in 2+1-Dimensional De Sitter Spacetime

Details Exact String Solutions in 2+1-Dimensional De Sitter Spacetime Exact String Solutions in 2+1-Dimensional De Sitter Spacetime

1992-09-14

arxiv.org/abs/hep-th/9209047v2

Theor.Math.Phys. 94 (1993) 166-172; Teor.Mat.Fiz. 94N2 (1993) 232-240

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, Phyzzx macropackage used, PAR-LPTHE 92/32. Revised version with a new understanding of the previous results

Scientific paper

10.1007/BF01019328

Exact and explicit string solutions in de Sitter spacetime are found. (Here, the string equations reduce to a sinh-Gordon model). A new feature without flat spacetime analogy appears: starting with a single world-sheet, several (here two) strings emerge. One string is stable and the other (unstable) grows as the universe grows. Their invariant size and energy either grow as the expansion factor or tend to constant. Moreover, strings can expand (contract) for large (small) universe radius with a different rate than the universe.

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