The M2-M5 Mohawk

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Abstract
A bstract: We show that the near-brane back-reaction of M2 branes ending on M5 branes has a rich “spike structure” that is determined by partitioning the numbers of M2 branes that are terminating on groups of M5 branes. The near-brane limit of the metric describing these branes has an AdS 3 factor, implying the existence of a dual CFT. Each partition of the M2 and M5 charges among spikes gives rise to a different “mohawk” revealing a new layer of brane fractionation. We conjecture that all these mohawks are dual to ground states of near-brane-intersection CFT’s. We show that the supergravity solutions describing these mohawks are part of the large families of AdS 3 × S 3 × S 3 solutions described in [1]. We identify precisely which of these families are relevant to brane intersections and show that the AdS 3 invariance emerges from the self-similarity of the spikes.

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