Holography for BCFTs with Multiple Boundaries: Multi-Splitting Quenches

Abstract

We elaborate on the method introduced in arXiv:2403.02165 for holographic duals of Boundary Conformal Field Theories (BCFTs) with multiple boundaries. Using these advances we calculate the entanglement entropy as a function of time for 1+1-dimensional CFTs that are split into $N$ subsystems. We give explicit results for $N=4$ and $N=17$. We find that all qualitative differences that arise for larger $N$ are present for $N=4$.

21 pages, 12 figures

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• The degrees of freedom of multiway junctions in three dimensional gravity