Classical Solutions in String Field Theory Around the Tachyon Vacuum

Details Classical Solutions in String Field Theory Around the Tachyon Vacuum Classical Solutions in String Field Theory Around the Tachyon Vacuum

2001-02-19

arxiv.org/abs/hep-th/0102112v2

Adv.Theor.Math.Phys.5:393-428,2002

Physics

High Energy Physics

High Energy Physics - Theory

33 pages, LaTeX. Conventions in appendix A clarified

Scientific paper

In a previous paper [hep-th/0012251] we proposed a simple class of actions for string field theory around the tachyon vacuum. In this paper we search for classical solutions describing D-branes of different dimensions using the ansatz that the solutions factorize into the direct product of a matter state and a universal ghost state. We find closed form expressions for the matter state describing D-branes of all dimensions. For the space filling D25-brane the state is the matter part of the zero angle wedge state, the ``sliver'', built in [hep-th/0006240]. For the other D-brane solutions the matter states are constructed using a solution generating technique outlined in [hep-th/0008252]. The ratios of tensions of various D-branes, requiring evaluation of determinants of infinite dimensional matrices, are calculated numerically and are in very good agreement with the known results.

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