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arXiv · hep-th/0508025

I-Brane Dynamics

Nissan Itzhaki·David Kutasov·Nathan Seiberg
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Abstract

We study the dynamics near a 1+1 dimensional intersection of two orthogonal stacks of fivebranes in type IIB string theory, using an open string description valid at weak coupling, and a closed string description valid at strong coupling. The weak coupling description suggests that this system is invariant under eight supercharges with a particular chirality in 1+1 dimensions, and its spectrum contains chiral fermions localized at the intersection. The closed string description leads to a rather different picture -- a three dimensional Poincare invariant theory with a gap and sixteen supercharges. We show that this dramatic change in the behavior of the system is partly due to anomaly inflow. Taking it into account leads to a coherent picture, both when the fivebranes in each stack are coincident and when they are separated.

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Nissan Itzhaki, David Kutasov, Nathan Seiberg. 2005-08-04. I-Brane Dynamics. https://doi.org/10.1088/1126-6708%2F2006%2F01%2F119

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