paper

Flowing to Higher Dimensions: A New Strongly-Coupled Phase on M2 Branes

arXiv:1506.01045 · doi:10.1007/JHEP11(2015)170

Abstract

We describe a one-parameter family of new holographic RG flows that start from and go to , where is conformal to a Kähler manifold and is Poincaré with one spatial direction compactified and fibered over . The new solutions "flow up dimensions," going from the -dimensional conformal field theory on M2 branes in the UV to a -dimensional field theory on intersecting M5 branes in the infra-red. The M2 branes completely polarize into M5 branes along the flow and the Poincaré sections of the are the -dimensional common intersection of the M5 branes. The emergence of the extra dimension in the infra-red suggests a new strongly-coupled phase of the M2 brane and ABJM theories in which charged solitons are becoming massless. The flow solution is first analyzed by finding a four-dimensional supersymmetric flow in gauged supergravity. This is then generalized to a one parameter family of non-supersymmetric flows. The infra-red limit of the solutions appears to be quite singular in four dimensions but the uplift to eleven-dimensional supergravity is remarkable and regular (up to orbifolding). Our construction is a non-trivial application of the recently derived uplift formulae for fluxes, going well beyond the earlier constructions of stationary points solutions. The eleven-dimensional supersymmetry is also analyzed and shows how, for the supersymmetric flow, the M2-brane supersymmetry in the UV is polarized entirely into M5-brane supersymmetry in the infra-red.

28 pages, 2 figures. Version 2 contains a discussion of new non-supersymmetric flows

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