On the effective action of D-brane-anti-D-brane system
Abstract
Description
We examine the proposal for constructing the effective action of a D-brane-anti-D-brane system from the non-abelian extension of tachyon DBI action. We consider two prescriptions for the trace in the non-abelian tachyon DBI action. The usual trace and the symmetric trace prescription. The former gives an action for the D\bar{D} system which reduces to the action proposed by A.Sen for coincident branes. The latter gives a different action which is consistent with the S-matrix element calculations.
10 pages, no figure, latex file, v2: typos corrected, a reference added, version published in JHEP
10 pages, no figure, latex file, v2: typos corrected, a reference added, version published in JHEP