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Related papers: Islands and stretched horizon

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The entanglement entropy of the Hawking radiation contains contributions from a region inside the black hole, which is called islands, implying that the Hawking radiation contains the information of islands. The boundary of the island is…

High Energy Physics - Theory · Physics 2024-12-31 Yoshinori Matsuo

Placing a black hole in a cavity provides a natural framework for exploring gravitational scales, thermodynamic instabilities, and effective gravity theories. In this paper, we examine the evolution of entanglement entropy and entanglement…

High Energy Physics - Theory · Physics 2024-12-23 Dmitry S. Ageev , Irina Ya. Aref'eva , Timofei A. Rusalev

We study an analogue information paradox in acoustic black holes which are emerged from the superfluid surrounding a Schwarzschild black hole. The resulting acoustic black hole contains both acoustic horizons and optical horizon, with…

High Energy Physics - Theory · Physics 2025-12-15 Yu-Ye Cheng , Jia-Rui Sun

We study thermodynamic properties and the entanglement island of a black hole in asymptotically safe quantum gravity, analyzing key thermodynamic quantities such as the Hawking temperature, heat capacity, and entropy, as well as the…

General Relativity and Quantum Cosmology · Physics 2025-12-29 Sobhan Kazempour , Sichun Sun , Chengye Yu

In this paper, we extend the method of calculating the entanglement entropy of Hawking radiation of black holes using the "in" vacuum state, which describes one-sided asymptotically flat neutral black hole formed by gravitational collapse,…

General Relativity and Quantum Cosmology · Physics 2024-08-15 Yun-Feng Qu , Yi-Ling Lan , Hongwei Yu , Wen-Cong Gan , Fu-Wen Shu

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

We use the notion of double holography to study Hawking radiation emitted by the eternal BTZ black hole in equilibrium with a thermal bath, but in the form of warped CFT$_2$ degrees of freedom. In agreement with the literature, we find…

High Energy Physics - Theory · Physics 2021-07-22 Elena Caceres , Arnab Kundu , Ayan K. Patra , Sanjit Shashi

By applying the island rule proposed recently, we compute the entanglement entropy of Hawking radiation and study the Page curve for the eternal black holes in massive gravity. We investigate for both the neutral and charged black holes…

High Energy Physics - Theory · Physics 2022-05-18 Cao H. Nam

Information located in an entanglement island in semiclassical gravity can be nonperturbatively reconstructed from distant radiation, implying a radical breakdown of effective field theory. We show that this occurs well outside of the black…

High Energy Physics - Theory · Physics 2023-12-21 Raphael Bousso , Geoff Penington

We apply the recently proposed quantum extremal surface construction to calculate the Page curve of the eternal Reissner-Nordstr\"om black holes in four dimensions ignoring the backreaction and the greybody factor. Without the island, the…

High Energy Physics - Theory · Physics 2021-04-28 Xuanhua Wang , Ran Li , Jin Wang

We study the information paradox of Reissner-Nordstr${\ddot{o}}$m anti-de Sitter (RN-AdS$_{d+1}$) black holes in the large dimension limit by using the island formula. The entanglement entropy of Hawking radiation is calculated both for the…

High Energy Physics - Theory · Physics 2024-06-17 Chen-Wei Tong , Dong-Hui Du , Jia-Rui Sun

Following our previous work on hybrid quantum states in the RST model, we study its most interesting solution representing a completely regular spacetime with the structure of causal diamond, containing an apparent horizon and radiation at…

High Energy Physics - Theory · Physics 2024-11-15 Yohan Potaux , Debajyoti Sarkar , Sergey N. Solodukhin

Hawking radiation of the blackhole is calculated based on the principle of local field theory. In our approach, the radiation is a unitary process, therefore no information loss will be recorded. In fact, observers in different regions of…

High Energy Physics - Theory · Physics 2021-09-02 Shotaro Shiba Funai , Hirotaka Sugawara

We introduce the concept of timelike entanglement entropy of Hawking radiation as a novel probe of the black hole information paradox. By analytically continuing black hole spacetimes to Euclidean signature, we define timelike correlations…

General Relativity and Quantum Cosmology · Physics 2026-02-09 Yahya Ladghami , Francisco S. N. Lobo , Taoufik Ouali

This paper investigates the Page curve in Warped Anti-de Sitter black holes using the quantum extremal surface prescription. The findings reveal that in the absence of an island, the entanglement entropy of Hawking radiation grows…

High Energy Physics - Theory · Physics 2023-08-11 Ankit Anand

In this work, we investigate the properties of Hawking radiation induced by the quantum atmosphere beyond the event horizon, by considering two detectors in Schwarzschild spacetime with the parameterized Hartle-Hawking temperature.…

General Relativity and Quantum Cosmology · Physics 2025-06-16 Shuai Zhang , Li-Juan Li , Xue-Ke Song , Liu Ye , Dong Wang

In this paper, we have analyzed the information paradox and its resolution using island proposal in Schwarzschild de-Sitter black hole spacetime. First, we study the information paradox for the black hole patch by treating de-Sitter patch…

High Energy Physics - Theory · Physics 2023-01-16 Gopal Yadav , Nitin Joshi

We compute the entanglement entropy of Hawking radiation in a bath attached to a deformed eternal AdS black hole. This black hole is dual to the two identical strongly coupled large-$N_c$ thermal field theories, where each theory is…

High Energy Physics - Theory · Physics 2025-07-01 Parul Jain , Sanjay Pant , Himanshu Parihar

The island rule for the entanglement entropy is applied to an eternal Reissner-Nordstr\"om black hole. The key ingredient is that the black hole is assumed to be in thermal equilibrium with a heat bath of an arbitrary temperature and so the…

High Energy Physics - Theory · Physics 2021-10-08 Wontae Kim , Mungon Nam

We consider an AdS$_2$ black hole in equilibrium with a bath, which we take to have a dual description as (0+1)-dimensional quantum mechanical system coupled to a (1+1)-dimensional field theory serving as the bath. We compute the entropies…

High Energy Physics - Theory · Physics 2023-08-09 Ahmed Almheiri , Raghu Mahajan , Juan Maldacena
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