Searching for surface defect CFTs within AdS${}_3$

Abstract

We study ${\mathrm{AdS}}_3\times S^3/{\mathbb{Z}}_k\times {\tilde{S}}^3/{\mathbb{Z}}_{k^{\prime }}$ solutions to M-theory preserving $\mathcal{N}=(0,4)$ supersymmetries, arising as near-horizon limits of M2-M5 brane intersections ending on M5'-branes, with both types of five-branes placed on A-type singularities. Solutions in this class asymptote locally to ${\mathrm{AdS}}_7/{\mathbb{Z}}_k\times {\tilde{S}}^3/{\mathbb{Z}}_{k^{\prime }}$, and can thus be interpreted as holographic duals to surface defect CFTs within the $\mathcal{N}=(1,0)$ 6d CFT dual to this solution. Upon reduction to Type IIA, we obtain a new class of solutions of the form ${\mathrm{AdS}}_3\times S^3/{\mathbb{Z}}_k\times S^2\times {\Sigma }_2$ preserving (0,4) supersymmetries. We construct explicit 2d quiver CFTs dual to these solutions, describing D2-D4 surface defects embedded within the 6d (1,0) quiver CFT dual to the ${\mathrm{AdS}}_7/{\mathbb{Z}}_k$ solution to massless IIA. Finally, in the massive case, we show that the recently constructed ${\mathrm{AdS}}_3\times S^2\times {\mathrm{CY}}_2$ solutions with $\mathcal{N}=(0,4)$ supersymmetries gain a defect interpretation when ${\mathrm{CY}}_2=T^4$ as surface CFTs originating from D2-NS5-D6 defects embedded within the 5d CFT dual to the Brandhuber-Oz ${\mathrm{AdS}}_6$ background.

arXiv comment44 pages, 3 figures, published version

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• AdS${}_2$ geometries and non-Abelian T-duality in non-compact spaces
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• The conformal brane-scan: an update
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• Line and surface defects in 5D N=2 SCFT from matter-coupled F(4) gauged supergravity
• Twisted compactifications and conformal defects from ISO(3)xU(1) F(4) gauged supergravity
• From Large to Small $\mathcal{N}=(4,4)$ Superconformal Surface Defects in Holographic 6d SCFTs
• New AdS${}_3$/CFT${}_2$ pairs in massive IIA with $(0,4)$ and $(4,4)$ supersymmetries