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Boundary conformal field theory (BCFT) and interface conformal field theory (ICFT) attract attention in the context of the information paradox problem. On this background, we develop the idea of the reflected entropy in BCFT/ICFT. We first…

High Energy Physics - Theory · Physics 2022-11-16 Yuya Kusuki

We study the mixed state entanglement of an asymptotic AdS black hole system with scalar hair. Through numerical calculations, we find that the holographic entanglement entropy (HEE) presents a non-monotonic behavior with the system…

High Energy Physics - Theory · Physics 2022-03-02 Zheng-Chen Song , Zhe Yang , Chong-Ye Chen , Peng Liu

The purpose of this report is to provide a framework for defining phase transition processes in two dimensional holographic superconductors, and to illustrate how they are useful to be described by holographic entanglement entropy. We study…

High Energy Physics - Theory · Physics 2018-04-11 Davood Momeni , Kairat Myrzakulov , Ratbay Myrzakulov

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 boundary. The conventional island formula, originally designed to…

High Energy Physics - Theory · Physics 2025-03-14 Peng-Xiang Hao , Taishi Kawamoto , Shan-Ming Ruan , Tadashi Takayanagi

We study holographic superconductor model with two scalar fields coupled to one single Maxwell field in the AdS soliton background away from the probe limit. We disclose properties of phase transitions mostly from the holographic…

High Energy Physics - Theory · Physics 2017-03-14 Yan Peng , Guohua Liu

We derive dynamics of the entanglement wedge cross section from the reflected entropy for local operator quench states in the holographic CFT. By comparing between the reflected entropy and the mutual information in this dynamical setup, we…

High Energy Physics - Theory · Physics 2020-03-18 Yuya Kusuki , Kotaro Tamaoka

This work explores the black hole information loss paradox, a fundamental challenge in theoretical physics. It proposes insights using Holographic Entanglement Entropy (HEE) and the AdS/BCFT correspondence within Horndeski gravity. The work…

High Energy Physics - Theory · Physics 2025-09-01 Fabiano F. Santos

We study the partial entanglement entropy (PEE) aspects of the holographic BCFT setup with an entanglement island, inspired by the holographic triality of the AdS/BCFT setup developed in the recent study on the black hole information…

High Energy Physics - Theory · Physics 2022-07-13 Yi-Yu Lin , Jia-Rui Sun , Yuan Sun , Jie-Chen Jin

We consider the entanglement entropy in 2d conformal field theory in a class of excited states produced by the insertion of a heavy local operator. These include both high-energy eigenstates of the Hamiltonian and time-dependent local…

High Energy Physics - Theory · Physics 2015-03-27 Curtis T. Asplund , Alice Bernamonti , Federico Galli , Thomas Hartman

In this paper we propose a mechanism to generate entanglement islands in quantum systems from a purely quantum information perspective. More explicitly we show that, if we impose certain constraints on a quantum system by projecting out…

High Energy Physics - Theory · Physics 2025-05-14 Debarshi Basu , Qiang Wen , Shangjie Zhou

We propose a covariant holographic entanglement negativity constructionfor time-dependent mixed states of adjacent intervals in $(1+1)$-dimensional conformal field theories dual to non-static bulk $\mathrm{AdS_3}$ configurations. Our…

High Energy Physics - Theory · Physics 2019-07-22 Parul Jain , Vinay Malvimat , Sayid Mondal , Gautam Sengupta

We advance a construction for the covariant holographic entanglement negativity for time dependent mixed states of disjoint intervals in $(1+1)$ dimensional conformal field theories ($CFT_{1+1}$) dual to bulk non static $AdS_3$ geometries.…

High Energy Physics - Theory · Physics 2019-07-16 Vinay Malvimat , Sayid Mondal , Boudhayan Paul , Gautam Sengupta

In this paper, we propose a new gravity dual for a $2$d BCFT with two conformal boundaries by introducing a defect that connects the two End-of-the-World branes. We demonstrate that the BCFT dual to this bulk model exhibits a richer lowest…

High Energy Physics - Theory · Physics 2022-12-01 Masamichi Miyaji , Chitraang Murdia

Using extended island formula we compute entanglement entropy of Hawking radiation for black hole solutions of certain gravitational models containing higher derivative terms. To be concrete we consider two different four dimensional models…

High Energy Physics - Theory · Physics 2021-02-24 Mohsen Alishahiha , Amin Faraji Astaneh , Ali Naseh

In this study, we calculate the $m-1$ correction to the reflected entropy for two adjacent intervals on a half-infinite line within the AdS$_3$/BCFT$_2$ framework, where $m$ is a Renyi index for a canonical purification. We utilize the…

High Energy Physics - Theory · Physics 2025-06-18 Byoungjoon Ahn , Sang-Eon Bak , Keun-Young Kim , Mitsuhiro Nishida

We propose a construction to compute the holographic entanglement negativity for bipartite mixed state configurations of two disjoint subsystems in higher dimensional conformal field theories (CFT$_d$s) dual to bulk AdS$_{d+1}$ geometries.…

High Energy Physics - Theory · Physics 2024-12-31 Jaydeep Kumar Basak , Himanshu Parihar , Boudhayan Paul , Gautam Sengupta

Recently it was proposed that the entanglement entropy of the Hawking radiation contains the information of a region including the interior of the event horizon, which is called "island." In studies of the entanglement entropy of the…

High Energy Physics - Theory · Physics 2021-07-28 Yoshinori Matsuo

We calculate the time evolution of entanglement entropy in two dimensional conformal field theory with a moving mirror. For a setup modeling Hawking radiation, we obtain a linear growth of entanglement entropy and show that this can be…

High Energy Physics - Theory · Physics 2021-02-17 Ibrahim Akal , Yuya Kusuki , Noburo Shiba , Tadashi Takayanagi , Zixia Wei

In a recent paper, arXiv:1309.4877, a holographic p-wave model has been proposed in an Einstein-Maxwell-complex vector field theory with a negative cosmological constant. The model exhibits rich phase structure depending on the mass and the…

High Energy Physics - Theory · Physics 2015-02-25 Li-Fang Li , Rong-Gen Cai , Li Li , Chao Shen

We study the applicability of the covariant holographic entanglement entropy proposal to asymptotically warped AdS$_3$ spacetimes with an SL(2,R) x U(1) isometry. We begin by applying the proposal to locally AdS$_3$ backgrounds which are…

High Energy Physics - Theory · Physics 2015-06-17 Dionysios Anninos , Joshua Samani , Edgar Shaghoulian