43 citations · 73 across the 13 of their papers we have counts for
13 papers
The Entanglement Wedge Polygon
Kosei Fujiki, Jonathan Harper, Tadashi Takayanagi +1
In this work we consider a particular codimension-1 region of a holographic spacetime which we call the entanglement wedge polygon (EWP). For a pure state and a partition of the bo…
Holographic Dual of PT Symmetric BCFT
Ryota Maeda, Nanami Nakamura, Tadashi Takayanagi
We present a holographic dual of a two dimensional conformal field theory with non-hermitian but Parity-Time (PT) symmetric boundary conditions, by applying the AdS/BCFT duality an…
Holographic Entanglement Propagation Through Wormholes
Kazuki Doi, Liang Li, Ung Nguyen +1
We study how energy and quantum entanglement are transferred when two identical CFTs are entangled locally. This is probed by considering a local operator insertion in one of the C…
Non-hermitian Density Matrices from Time-like Entanglement and Wormholes
Jonathan Harper, Taishi Kawamoto, Ryota Maeda +2
We extensively explore the connections between time-like entanglement and non-hermitian density matrices in quantum many-body systems. We classify setups where we encounter non-her…
Hayden--Preskill Model via Local Quenches
Weibo Mao, Tadashi Takayanagi
We model the Hayden--Preskill (HP) information recovery protocol in 2d CFTs via local joining quenches. Euclidean path integrals with slits prepare the HP subsystems: the message $…
Flat Space Holography via AdS/BCFT
Peng-Xiang Hao, Naoki Ogawa, Tadashi Takayanagi +1
In this paper, we study a new class of AdS/BCFT setups, where the world-volumes of end-of-the-world branes (EOW branes) are given by flat spaces, to explore flat space holography f…
Entanglement Suppression Due to Black Hole Scattering
Kazuki Doi, Tadashi Takayanagi
We consider the evolution of entanglement entropy in a two-dimensional conformal field theory with a holographic dual. Specifically, we are interested in a class of excited states…
Emergent Holographic Spacetime from Quantum Information
Tadashi Takayanagi
Holographic duality describes gravitational theories in terms of quantum many-body systems. In holography, quantum information theory provides a crucial tool that directly connects…
Bulk Reconstruction of Scalar Excitations in Flat/CCFT and the Flat Limit from (A)dS/CFT
Peng-Xiang Hao, Kotaro Shinmyo, Yu-ki Suzuki +2
We explore the reconstruction of bulk local states in three-dimensional flat spacetime (Flat) using states from two-dimensional Carrollian conformal field theories (CCFT),…
Traversable AdS Wormhole via Non-local Double Trace or Janus Deformation
Taishi Kawamoto, Ryota Maeda, Nanami Nakamura +1
We study (i) Janus deformations and (ii) non-local double trace deformations of a pair of CFTs, as two different ways to construct CFT duals of traversable AdS wormholes. First, we…
Non-extremal Island in de Sitter Gravity
Peng-Xiang Hao, Taishi Kawamoto, Shan-Ming Ruan +1
This paper investigates the challenges and resolutions in computing the entanglement entropy for the quantum field theory coupled to de Sitter (dS) gravity along a timelike boundar…
Statistical Mechanics Approach to the Holographic Renormalization Group: Bethe Lattice Ising Model and p-adic AdS/CFT
Kouichi Okunishi, Tadashi Takayanagi
The Bethe lattice Ising model -- a classical model of statistical mechanics for the phase transition -- provides a novel and intuitive understanding of the prototypical relationshi…
Tachyon Condensation on Noncommutative Torus
I. Bars, H. Kajiura, Y. Matsuo +1
We discuss noncommutative solitons on a noncommutative torus and their application to tachyon condensation. In the large B limit, they can be exactly described by the Powers-Rieffe…