Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-04-12
Phys.Rev.D66:023502,2002
Physics
High Energy Physics
High Energy Physics - Theory
14 pages, 8 eps figs
Scientific paper
10.1103/PhysRevD.66.023502
It has long been known that strings wound around incontractible cycles can play a vital role in cosmology. In particular, in a spacetime with toroidal spatial hypersurfaces, the dynamics of the winding modes may help yield three large spatial dimensions. However, toroidal compactifications are phenomenologically unrealistic. In this paper we therefore take a first step toward extending these cosmological considerations to $D$-dimensional toroidal orbifolds. We use numerical simulation to study the timescales over which "pseudo-wound" strings unwind on these orbifolds with trivial fundamental group. We show that pseudo-wound strings can persist for many ``Hubble times'' in some of these spaces, suggesting that they may affect the dynamics in the same way as genuinely wound strings. We also outline some possible extensions that include higher-dimensional wrapped branes.
Easther Richard
Greene Brian R.
Jackson Mark G.
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