D-Branes as Unstable Lumps in Bosonic Open String Field Theory

Physics – High Energy Physics – High Energy Physics - Theory

Scientific paper

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14 pages, 5 figures. Typos corrected, reference added

Scientific paper

10.1088/1126-6708/2000/04/012

We construct Dp-branes in bosonic string theory as unstable lumps in a truncated string field theory of open strings on a D25-brane. We find that the lowest level truncation gives good quantitative agreement with the predicted D-brane tension and low-lying spectrum of the D-brane for sufficiently large p and study the effect of the next level corrections for p=24. We show that a U(1) gauge field zero mode on the D-brane arises through a mechanism reminiscent of the Randall-Sundrum mechanism for gravity.

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