Tachyon condensation and universality of DBI action

Abstract

We show that a low-energy action for massless fluctuations around a tachyonic soliton background representing a codimension one D-brane coincides with the Dirac-Born-Infeld action. The scalar modes which describe transverse oscillations of the D-brane are translational collective coordinates of the soliton. The appearance of the DBI action is a universal feature independent of details of a tachyon effective action, provided it has the structure implied by the open string sigma model partition function.

LaTex, 15 p. v2: references added

References in corpus (1)

• Descent Relation of Tachyon Condensation from Boundary String Field Theory

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