Bound states of KK monopole and momentum

Abstract

We construct metrics for multiple Kaluza-Klein monopole-branes carrying travelling waves along one of the isometry directions (not KK monopole fibre) in ten dimensional type IIB supergravity and relate them via string dualities to two charge Mathur-Lunin metrics. We find that adding momentum to $N_K$ coincident monopoles leads them to separate in the transverse direction into $N_K$ single monopoles. Hence the bound state metrics are perfectly smooth, without $Z_{N_K}$ singularities, and correspond to a system with non-zero extension in the transverse directions. We compare this solution with other solutions with KK monopole.

arXiv comment22 pages, 1 fig. References added

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