Off-shell extension of S-matrix elements and tachyonic effective actions | Zendy

Mohammad R. Garousi | Zendy

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Off-shell extension of S-matrix elements and tachyonic effective actions

Author(s) -

Mohammad R. Garousi

Publication year - 2003

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2003/04/027

Subject(s) - tachyon , physics , string (physics) , element (criminal law) , massless particle , shell (structure) , action (physics) , extension (predicate logic) , matrix (chemical analysis) , theoretical physics , tachyonic field , effective action , string theory , mathematical physics , quantum mechanics , law , computer science , gauge theory , materials science , gauge boson , composite material , political science , higgs mechanism , programming language

We show that the on-shell S-matrix elements of four open string masslessscalars, two scalars and two tachyons, and four open string tachyons in thesuper string theory can be written in a unique form. We then propose anoff-shell extension for the S-matrix element of four scalars which isconsistent, in the low energy limit, with the Dirac-Born-Infeld effectiveaction. Using a similar off-shell extension for the S-matrix element of twoscalars and two tachyons and for the S-matrix element of four tachyons, we showthat they are fully consistent with the tachyonic DBI action.Comment: Latex, 17 pages, v3:a paragraph comparing off-shell and on- shell amplitudes added, reference adde

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