Wrapped D-Branes as BPS Monopoles: The Moduli Space Perspective

Details Wrapped D-Branes as BPS Monopoles: The Moduli Space Perspective Wrapped D-Branes as BPS Monopoles: The Moduli Space Perspective

2003-12-05

arxiv.org/abs/hep-th/0312053v1

Phys.Rev.D69:126005,2004

Physics

High Energy Physics

High Energy Physics - Theory

31 pages, LaTeX

Scientific paper

10.1103/PhysRevD.69.126005

We study the four dimensional effective action of a system of D6-branes wrapped on the K3 manifold times a torus, allowing the volume of the internal manifolds to remain dynamical. An unwrapped brane is at best a Dirac monopole of the dual R-R sector field to which it couples. After wrapping, a brane is expected to behave as a BPS monopole, where the Higgs vacuum expectation value is set by the size of the K3. We determine the moduli space of an arbitrary number of these wrapped branes by introducing a time dependent perturbation of the static solution, and expanding the supergravity equations of motion to determine the dynamics of this perturbation, in the low velocity limit. The result is the hyper-Kahler generalisation of the Euclidean Taub-NUT metric presented by Gibbons and Manton. We note that our results also pertain to the behavior of bound states of Kaluza-Klein monopoles and wrapped NS5-branes in the T^4 compactified heterotic string.

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