I-Brane Dynamics

Details I-Brane Dynamics I-Brane Dynamics

2005-08-04

arxiv.org/abs/hep-th/0508025v1

JHEP 0601:119,2006

Physics

High Energy Physics

High Energy Physics - Theory

43 pages, 4 figures

Scientific paper

10.1088/1126-6708/2006/01/119

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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