Closed-string Tachyon Condensation and the On-shell Effective Action of Open-string Tachyons

Details Closed-string Tachyon Condensation and the On-shell Effective Action of Open-string Tachyons Closed-string Tachyon Condensation and the On-shell Effective Action of Open-string Tachyons

2001-05-07

arxiv.org/abs/hep-th/0105054v5

Prog.Theor.Phys. 106 (2001) 989-1016

Physics

High Energy Physics

High Energy Physics - Theory

Latex, 33pages. V3/ Typos corrected and sentences improved. References added. V4/ Conclusion changed. Sentences improved, Appe

Scientific paper

10.1143/PTP.106.989

We study how the effect of closed-string tachyon condensation can enter into the on-shell effective action of open-string tachyons in the bosonic case. We also consider open-string one-loop quantum corrections to the on-shell action. We use a sigma-model approach with boundary terms, and we utilize some results of boundary string field theory (BSFT) to define the on-shell effective action. We regard D-instanton-like objects with appropriate weight as closed-string tachyon tadpoles, and we insert them into worldsheets to analyze the effect of closed-string tachyons.

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