Coupling of Rolling Tachyon to Closed Strings

Details Coupling of Rolling Tachyon to Closed Strings Coupling of Rolling Tachyon to Closed Strings

2002-08-27

arxiv.org/abs/hep-th/0208196v3

Nucl.Phys. B647 (2002) 101-116

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, no figure; v2, reference added, minor corrections; v3, final version that appeared in Nucl.Phys. B

Scientific paper

10.1016/S0550-3213(02)00941-0

We study the late time behavior of the boundary state representing the rolling tachyon constructed by Sen. It is found that the coupling of the rolling tachyon to massive modes of the closed string grows exponentially as the system evolves. We argue that the description of rolling tachyon by a boundary state is valid during the finite time determined by string coupling, and that energy could be dissipated to the bulk beyond this time. We also comment on the relation between the rolling tachyon boundary state and the spacelike D-brane boundary state.

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