Holographic RG flows and Janus interfaces from ISO(3)xU(1) F(4) gauged supergravity

Abstract

We study six-dimensional $F(4)$ gauged supergravity coupled to four vector multiplets with a non-semisimple $ISO(3)\times U(1)$ gauge group. This gauged supergravity arises from a consistent truncation of type IIB string theory on $S^2\times \Sigma$ with $\Sigma$ being a Riemann surface. We find that the gauged supergravity admits two $SO(3)$ symmetric $Ad{S}_6$ vacua, one with $N=(1,1)$ supersymmetry and the other one non-supersymmetric. We compute all scalar masses at these critical points and find that only the supersymmetric $Ad{S}_6$ vacuum is stable. By truncating to $SO(3)\times U(1)$ and $SO(2)\times U(1)$ invariant sectors, we study holographic RG flow solutions from this critical point to a number of non-conformal phases of the dual $N=2$ SCFT in five dimensions. Finally, we give some examples of supersymmetric Janus solutions describing conformal interfaces within the five-dimensional SCFT. All of these solutions provide first holographic results from matter-coupled $F(4)$ gauged supergravity with non-semisimple gauge groups.

arXiv comment34 pages, 5 figures, typos corrected, references and a comment on uplifting the solutions added

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• Janus and RG-flow interfaces from 5D N=4 gauged supergravity