Boundary CFT construction of D-branes in vacuum string field theory

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Published 7 December 2001 Published under licence by IOP Publishing Ltd
, , Citation Leonardo Rastelli et al JHEP11(2001)045 DOI 10.1088/1126-6708/2001/11/045

1126-6708/2001/11/045

Abstract

In previous papers we built (multiple) D-branes in flat space-time as classical solutions of the string field theory based on the tachyon vacuum. In this paper we construct classical solutions describing all D-branes in any fixed space-time background defined by a two dimensional CFT of central charge 26. A key role is played by the geometrical definition of the sliver state in general boundary CFT's. The correct values for ratios of D-brane tensions arise because the norm of the sliver solution is naturally related to the disk partition function of the appropriate boundary CFT. We also explore the possibility of reproducing the known spectrum of physical states on a D-brane as deformations of the sliver.

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10.1088/1126-6708/2001/11/045