Closed-String Tachyon Condensation and the On-Shell Effective Action of Open-String Tachyons | Zendy

Shin Nakamura | Zendy

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Closed-String Tachyon Condensation and the On-Shell Effective Action of Open-String Tachyons

Author(s) -

Shin Nakamura

Publication year - 2001

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.106.989

Subject(s) - tachyon condensation , physics , tachyon , tachyonic field , string field theory , non critical string theory , string (physics) , effective action , nambu–goto action , relationship between string theory and quantum field theory , action (physics) , bosonic string theory , type i string theory , theoretical physics , mathematical physics , quantum electrodynamics , quantum mechanics , quantum , quantum gravity , gauge theory , worldsheet , gauge boson , higgs mechanism

We study how the effect of closed-string tachyon condensation can enter intothe on-shell effective action of open-string tachyons in the bosonic case. Wealso 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 resultsof boundary string field theory (BSFT) to define the on-shell effective action.We regard D-instanton-like objects with appropriate weight as closed-stringtachyon tadpoles, and we insert them into worldsheets to analyze the effect ofclosed-string tachyons.Comment: Latex, 33pages. V3/ Typos corrected and sentences improved. References added. V4/ Conclusion changed. Sentences improved, Appendix added, references added. V5/ Sentences improved, to appear in Prog.Theor.Phy

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