DiracBornInfeld action on the tachyon kink and vortex
Abstract
The tachyon effective field theory describing the dynamics of a nonBogomol’nyiPrasadSommerfield (BPS) Dbrane in superstring theory has an infinitely thin but finite tension kink solution describing a codimension one BPS Dbrane. We study the worldvolume theory of massless modes on the kink, and show that the world volume action has precisely the DiracBornInfeld (DBI) form without any higher derivative corrections. We generalize this to a vortex solution in the effective field theory on a braneantibrane pair. As in the case of the kink, the vortex is infinitely thin, has finite energy density, and the worldvolume action on the vortex is again given exactly by the DBI action on a BPS Dbrane. We also discuss the coupling of fermions and restoration of supersymmetry and κ symmetry on the world volume of the kink. The absence of higher derivative corrections to the DBI action on the soliton implies that all such corrections are related to higher derivative corrections to the original effective action on the world volume of a nonBPS Dbrane or braneantibrane pair.
 Publication:

Physical Review D
 Pub Date:
 September 2003
 DOI:
 10.1103/PhysRevD.68.066008
 arXiv:
 arXiv:hepth/0303057
 Bibcode:
 2003PhRvD..68f6008S
 Keywords:

 11.25.Uv;
 D branes;
 High Energy Physics  Theory
 EPrint:
 LaTeX file, 34 pages