I-Brane Dynamics

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.

43 pages, 4 figures

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• TASI 2003 Lectures on Anomalies
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• Note about Static D1-brane in I-brane Background
• Fundamental String and D1-brane in I-brane Background
• Spiky Strings on I-brane
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• Holography of D-Brane Reconnection
• Wrapped Fivebranes Redux
• Stable Non-Supersymmetric Vacua in the Moduli Space of Non-Critical Superstrings
• Intersecting D7-Branes, I5-Branes and Conifolds
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• Delocalization from Anomaly Inflow and Intersecting Brane Dynamics
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• $(0,4)$ Projective Superspaces I: Interacting Linear Sigma Models