BPS D-branes after Tachyon Condensation
arXiv:hep-th/0008242
Abstract
We construct an effective action describing brane-antibrane system containing N D-branes and N \bar{D}-branes. BPS equations for remaining D-branes after tachyon condensation are derived and their properties are investigated. The value of the D-brane tension and the number of brane bound states are discussed.
12 pages, references added