276 citations · 1.7k across the 19 of their papers we have counts for
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Fluctuations in the Entropy of Hawking Radiation
Raphael Bousso, Masamichi Miyaji
We use the gravitational path integral (GPI) to compute the fluctuations of the Hawking radiation entropy around the Page curve, in a two-dimensional model introduced by Penington…
Holographic BCFT with a Defect on the End-of-the-World Brane
Masamichi Miyaji, Chitraang Murdia
In this paper, we propose a new gravity dual for a d BCFT with two conformal boundaries by introducing a defect that connects the two End-of-the-World branes. We demonstrate tha…
Island for Gravitationally Prepared State and Pseudo Entanglement Wedge
Masamichi Miyaji
We consider spacetime initiated by a finite-sized initial boundary as a generalization of the Hartle-Hawking no-boundary state. We study entanglement entropy of matter state prepar…
Spectrum of End of the World Branes in Holographic BCFTs
Masamichi Miyaji, Tadashi Takayanagi, Tomonori Ugajin
We study overlaps between two regularized boundary states in conformal field theories. Regularized boundary states are dual to end of the world branes in an AdS black hole via the…
Islands for Reflected Entropy
Venkatesa Chandrasekaran, Masamichi Miyaji, Pratik Rath
Recent work has demonstrated the need to include contributions from entanglement islands when computing the entanglement entropy in QFT states coupled to regions of semiclassical g…
Entanglement Entropy after Double-Excitation as Interaction Measure
Yuya Kusuki, Masamichi Miyaji
We study entanglement entropy after a double local quench in two-dimensional conformal field theories (CFTs), with any central charge . In the holographic CFT, such a state wi…
Entanglement Entropy, OTOC and Bootstrap in 2D CFTs from Regge and Light Cone Limits of Multi-point Conformal Block
Yuya Kusuki, Masamichi Miyaji
We explore the structures of light cone and Regge limit singularities of -point Virasoro conformal blocks in two-dimensional conformal field theories with no chiral primar…
Holographic Entanglement of Purification from Conformal Field Theories
Pawel Caputa, Masamichi Miyaji, Tadashi Takayanagi +1
We explore a conformal field theoretic interpretation of the holographic entanglement of purification, which is defined as the minimal area of entanglement wedge cross section. We…
Time Evolution after Double Trace Deformation
Masamichi Miyaji
In this paper, we consider double trace deformation to single CFT, and study time evolution after the deformation. The double trace deformation we consider is nonlocal: compo…
Path-Integral Complexity for Perturbed CFTs
Arpan Bhattacharyya, Pawel Caputa, Sumit R. Das +3
In this work, we formulate a path-integral optimization for two dimensional conformal field theories perturbed by relevant operators. We present several evidences how this optimiza…
Liouville Action as Path-Integral Complexity: From Continuous Tensor Networks to AdS/CFT
Pawel Caputa, Nilay Kundu, Masamichi Miyaji +2
We propose an optimization procedure for Euclidean path-integrals that evaluate CFT wave functionals in arbitrary dimensions. The optimization is performed by minimizing certain fu…
Anti-de Sitter Space from Optimization of Path Integrals in Conformal Field Theories
Pawel Caputa, Nilay Kundu, Masamichi Miyaji +2
We introduce a new optimization procedure for Euclidean path integrals which compute wave functionals in conformal field theories (CFTs). We optimize the background metric in the s…
From Path Integrals to Tensor Networks for AdS/CFT
Masamichi Miyaji, Tadashi Takayanagi, Kento Watanabe
In this paper, we discuss tensor network descriptions of AdS/CFT from two different viewpoints. First, we start with an Euclidean path-integral computation of ground state wave fun…
Butterflies from Information Metric
Masamichi Miyaji
We study time evolution of distance between thermal states excited by local operators, with different external couplings. We find that growth of the distance implies growth of comm…
Causal Evolutions of Bulk Local Excitations from CFT
Kanato Goto, Masamichi Miyaji, Tadashi Takayanagi
Bulk localized excited states in an AdS spacetime can be constructed from Ishibashi states with respect to the global conformal symmetry in the dual CFT. We study boundary two poin…
Gravity Dual of Quantum Information Metric
Masamichi Miyaji, Tokiro Numasawa, Noburo Shiba +2
We study a quantum information metric (or fidelity susceptibility) in conformal field theories with respect to a small perturbation by a primary operator. We argue that its gravity…
cMERA as Surface/State Correspondence in AdS/CFT
Masamichi Miyaji, Tokiro Numasawa, Noburo Shiba +2
We present how the surface/state correspondence, conjectured in arXiv:1503.03542, works in the setup of AdS3/CFT2 by generalizing the formulation of cMERA. The boundary states in c…
Surface/State Correspondence as a Generalized Holography
Masamichi Miyaji, Tadashi Takayanagi
We propose a new duality relation between codimension two space-like surfaces in gravitational theories and quantum states in dual Hilbert spaces. This surface/state correspondence…
Boundary States as Holographic Duals of Trivial Spacetimes
Masamichi Miyaji, Shinsei Ryu, Tadashi Takayanagi +1
We study real-space quantum entanglement included in conformally invariant boundary states in conformal field theories (CFTs). First, we argue that boundary states essentially have…