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A Note on D-Branes of Odd Codimensions from Noncommutative Tachyons

  • Mandal, Gautam
  • Rey, Soo-Jong
Published Article
Publication Date
Sep 18, 2000
Submission Date
Aug 29, 2000
DOI: 10.1016/S0370-2693(00)01238-7
arXiv ID: hep-th/0008214
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On a noncommutative space of rank-1, we construct a codimension-one soliton explicitly and, in the context of noncommutative bosonic open string field theory, identify it with the D24-brane. We compute the tension of the proposed D24-brane, yielding an exact value and show that it is related to the tension of the codimension two D23-brane by the string T-duality. This resolves an apparent puzzle posed by the result of Harvey, Kraus, Larsen and Martinec and proves that the T-duality is a gauge symmetry; in particular, at strong noncommutativity, it is part of the U(oo) gauge symmetry on the worldvolume. We also apply the result to non-BPS D-branes in superstring theories and argue that the codimension-one soliton gives rise to new descent relation among the non-BPS D-branes in Type IIA and Type IIB string theories via T-duality.

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