Holographic Local Operator Quenches in BCFTs

Abstract

We present a gravity dual of local operator quench in a two-dimensional CFT with conformal boundaries. This is given by a massive excitation in a three-dimensional AdS space with the end of the world brane (EOW brane). Due to the gravitational backreaction, the EOW brane gets deformed in a nontrivial way. We show that the energy-momentum tensor and entanglement entropy computed from the gravity dual and from the BCFT in the large $c$ limit match perfectly. Interestingly, this comparison avoids the folding of the EOW brane in an elegant way.

48 pages, 18 figures; minor revision: comments added, references added (v2); a minor correction, published version in JHEP (v3)

References in corpus (6)

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• Holographic Entanglement Entropy from 2d CFT: Heavy States and Local Quenches
• Quantum Dimension as Entanglement Entropy in 2D CFTs
• Entanglement of Local Operators in large N CFTs
• Rényi entropy of locally excited states with thermal and boundary effect in 2D CFTs
• Analytic Bootstrap in 2D Boundary Conformal Field Theory: Towards Braneworld Holography