Kinks of open superstring field theory

Details Kinks of open superstring field theory Kinks of open superstring field theory

2009-04-24

arxiv.org/abs/0904.3744v2

Nucl.Phys.B823:234-253,2009

Physics

High Energy Physics

High Energy Physics - Theory

26 pages, 3 figures; v2: discussion improved, appendix added, results unchanged, matches the published version

Scientific paper

10.1016/j.nuclphysb.2009.08.004

We construct approximate kink solutions of supersymmetric open string field theory at lowest level when non-local operators in the tachyon effective action are fully taken into account. To this purpose we derive two duplication formulae for products of incomplete gamma functions, which determine the level of approximation of the solutions. The time kink is an instanton of the Euclidean theory with a well-defined tunneling probability. The spatial kink solution represents an unstable D9-brane decaying into a stable D8-brane. We calculate the ratio of the brane tensions, which almost exactly reproduces the expected value.

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