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hep-th2000
BPS Vortices in Brane-Antibrane Effective Theory
Takao Suyama
We investigate an action which resembles the effective action of brane-antibrane system derived from boundary string field theory. We find that the action has smooth vortex solutio…
hep-th2000
A Note on Singular Black Holes
Takao Suyama
We reconsider entropy of black holes which do not have finite area horizon. It is suggested that some of them should have nonzero entropy from both supergravity and string theory p…
hep-th2000
BPS D-branes after Tachyon Condensation
Takao Suyama
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 d…