The Cascade is a MMS Instanton

Details The Cascade is a MMS Instanton The Cascade is a MMS Instanton

2004-05-24

arxiv.org/abs/hep-th/0405210v1

Advances in Soliton Research, Nova Science Publishers, 2006, pages 153-187

Physics

High Energy Physics

High Energy Physics - Theory

32 Pages, 5 eps Figures

Scientific paper

Wrap m D5-branes around the 2-cycle of a conifold, place n D3-branes at a point and watch the system relax. The D5-branes source m units of RR 3-form flux on the 3-cycle, which cause dielectric NS5-branes to nucleate and repeatedly sweep out the 3-cycle, each time gaining m units of D3-charge while the stack of D5-branes loses m units of D3-charge. A similar description of the Klebanov-Strassler cascade has been proposed by Kachru, et al. when m>>m-n. Using the T-dual MQCD we argue that the above process occurs for any m and n and in particular may continue for more than one step. The nonbaryonic roots of the SQCD vacua lead to new cascades because, for example, the 3-cycle swept does not link all of the D5's. This decay is the S-dual of a MMS instanton, which is the decay into flux of a brane that is trivial in twisted K-theory. This provides the first evidence for the S-dual of the K-theory classification that does not itself rely upon any strong/weak duality.

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