Supertubes.
It is shown that a IIA superstring carrying D0-brane charge can be "blown up," in a Minkowski vacuum background, to a (1/4)-supersymmetric tubular D2-brane, supported against collapse by the angular momentum generated by crossed electric and magnetic Born-Infeld fields. This "supertube" can be viewed as a world-volume realization of the sigma-model Q lump.
Mateos
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Department of Applied Mathematics and Theoretical Physics, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, United Kingdom. D.Mateos@damtp.cam.ac.uk
Townsend
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