Tubular D-branes in Salam-Sezgin Model

Abstract

We study DBI-type effective theory of an unstable D3-brane in the background manifold R^{1,1} x M_2 where M_2 is an arbitrary two-dimensional manifold. We obtain an exact tubular D2-brane solution of arbitrary cross sectional shape by employing 1/cosh tachyon potential. When M_2=S^2, the solution is embedded in the background geometry R^{1,3} x S^2 of Salam-Sezgin model. This tachyon potential shows a unique property that an array of tachyon soliton solutions has a fixed period which is independent of integration constants of the equations of motion. The thin BPS limit of the configurations leads to supertubes of arbitrary cross sectional shapes.

15 pages, 1 figure, LaTeX2e, minor changes, version appeared in JHEP

References in corpus (1)

• Moduli Space of Unstable D-branes on a Circle of Critical Radius

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• Cosmic D- and DF-strings from D3Dbar3: Black Strings and BPS Limit