Propagation of a string across the cosmological singularity

Details Propagation of a string across the cosmological singularity Propagation of a string across the cosmological singularity

2006-08-11

arxiv.org/abs/gr-qc/0608059v3

Class.Quant.Grav. 24 (2007) 915-922

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, 2 figures, revtex4; version accepted for publication in Class. Quantum Grav

Scientific paper

10.1088/0264-9381/24/4/011

Our results concern the transition of a quantum string through the singularity of the compactified Milne (CM) space. We restrict our analysis to the string winding around the compact dimension (CD) of spacetime. The CD undergoes contraction to a point followed by re-expansion. We demonstrate that both classical and quantum dynamics of considered string are well defined. Most of presently available calculations strongly suggest that the singularity of a time dependent orbifold is useless as a model of the cosmological singularity. We believe that our results bring, to some extent, this claim into question.

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