Fragmentation and defragmentation of strings in type IIA and their holographic duals

Abstract

We probe type IIA geometries with \emph{folded} semiclassical strings those encode the strong coupling dynamics associated with long operators in a class of SCFTs pertaining to spacetimes whose dimension vary from $6d$ down to $2d$. We particularly focus on folded string configurations those are extended through stack of flavor $Dp$ ($p=6,8$) branes localized along the internal manifold. Considering some specific examples within the realm of $\mathcal{N}=2$ linear quivers, we show that the associated string spectrum exhibits a pole as the string approaches flavor D6 branes. We identify this as a \emph{fragmentation} of long operators in the dual $\mathcal{N}=2$ SCFTs. On the other hand, a similar analysis for $\mathcal{N}=(1,0)$ SCFTs in $6d$ as well as $\mathcal{N}=(0,4)$ SCFTs in $4d$ reveals a set of new dispersion relations at strong coupling. Based on semiclassical calculations, we set an argument that explains either of these cases.

arXiv commentversion accepted in JHEP

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Cited by in corpus (5)

• AdS${}_2$ geometries and non-Abelian T-duality in non-compact spaces
• Integrability and non-integrability for marginal deformations of 4d $\mathcal{N}=2$ SCFTs
• Spin $2$ spectrum for marginal deformations of 4d $\mathcal{N}=2$ SCFTs
• Holographic timelike entanglement and $c$ theorem for supersymmetric QFTs in ($0+1$)d
• Holographic zero sound for $\mathcal{N}=2$ SCFTs in 4d