相关参考文献
注意：仅列出部分参考文献，下载原文获取全部文献信息。
Article
Physics, Particles & Fields
Lars Aalsma et al.
Summary: In this paper, we investigate information recovery in de Sitter space by constructing a two-dimensional gravity model with a domain wall. By introducing Rindler wedges, we probe de Sitter space from weakly-gravitating asymptotic regions, providing an outside perspective of the cosmological horizon. Unlike previous works, we control backreaction effects by considering a quantum state that breaks the thermal equilibrium of the Bunch-Davies state for a finite time, allowing controlled decoding of information from Gibbons-Hawking radiation.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Adam Levine et al.
Summary: Black holes and cosmology share common properties, leading to the question of whether our understanding of black holes can apply to cosmology. We discuss a paradox that arises if observers can access what lies beyond their cosmological horizon in the same way as they can access what lies beyond a black hole horizon, violating the no-cloning theorem of quantum mechanics. However, we argue that the paradox can be avoided in controlled examples through the use of the gravity path integral.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Astronomy & Astrophysics
Gopal Yadav et al.
Summary: In this study, the researchers analyzed the information paradox and its resolution in Schwarzschild de-Sitter black hole spacetime using the island proposal. They found that the black hole island is located inside the black hole event horizon, contrary to the universal result for eternal black holes, and the cosmological island is also located inside the cosmological event horizon. Moreover, they studied the effect of temperature on Page curves and observed that low-temperature black hole/de-Sitter patch exhibits Page curves at later times, while high-temperature black hole/de-Sitter patch shows the opposite behavior.
Article
Astronomy & Astrophysics
Vijay Balasubramanian et al.
Summary: We study the entangled pure state of two disjoint universes. The presence of gravity in one or both universes leads to modifications in the calculation of the entropy. When only one universe has gravity, a wormhole between the copies of the gravitating universe is included in the entropy formula. When both universes have gravity, a novel wormhole with multiple boundaries connecting replica copies of both universes dominates the path integral. The contribution from this wormhole restores unitarity.
CLASSICAL AND QUANTUM GRAVITY
(2022)
Article
Physics, Particles & Fields
Edgar Shaghoulian
Summary: This paper explores whether the central dogma of cosmological horizons has any support and proposes consistent answers with the quantum theory of de Sitter space, including a vanishing total entropy, an entropy of A/4G(N) on a single static patch, increasing entropy of a subregion as the region size grows, an island-like transition at half the horizon size, and a de Sitter version of the Hartman-Maldacena transition.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Geoff Penington et al.
Summary: Recent work has shown how to obtain the Page curve of an evaporating black hole through holographic computations of entanglement entropy. The validity of these computations is justified using the replica trick and geometries with a spacetime wormhole connecting the different replicas. The Page transition is studied in detail in a simple model by summing replica geometries with different topologies. Related quantities are computed in less detail in more complicated models like JT gravity coupled to conformal matter and the SYK model. Additionally, a direct gravitational argument for entanglement wedge reconstruction is given using the explicit formula known as the Petz map, where the spacetime wormhole plays a significant role. The interpretation of the wormhole geometries as part of some ensemble average implicit in the gravity description is also discussed.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Joshua Kames-King et al.
Summary: Investigated the entropy of the de Sitter cosmological horizon, considering an auxiliary system as a heat bath for two observers and studying the time-dependent entropy. Discovered a weakly gravitating region near the past cosmological horizon related to observables at future infinity.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Andrew Svesko et al.
Summary: This paper studies the semi-classical thermodynamics of two-dimensional de Sitter space in Jackiw-Teitelboim gravity, coupled with conformal matter. The study derives the quasi-local energy and the generalized entropy by introducing a timelike boundary in the static patch. The findings provide a first principles derivation of the island rule for U(1) symmetric dS(2) backgrounds.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Edgar Shaghoulian et al.
Summary: This paper expands on two recent proposals to generalize the Ryu-Takayanagi and Hubeny-Rangamani-Takayanagi formulas to de Sitter space, referred to as the monolayer and bilayer proposals. These proposals replace the boundary of AdS with the boundaries of static-patches or event horizons. The paper applies the rules of each proposal to various cases and demonstrates that they produce expected results. While the monolayer and bilayer proposals often yield the same results, they disagree in one specific situation. A better understanding of the thermodynamic limit of holographic systems is needed to definitively decide between the two.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Juan Maldacena et al.
Summary: This study focuses on aspects of the de Sitter version of Jackiw-Teitelboim gravity, exploring the boundary mode's gravitational corrections to cosmological observables and examining contributions from different topologies. By computing no-boundary wavefunctions and probability measures, the research also highlights the dominance of two-dimensional nearly de Sitter gravity dynamics on certain observables.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Yiming Chen et al.
Summary: This text discusses two-dimensional CFT states produced by gravitational path integrals, focusing on cases of Euclidean AdS(2) evolution and Lorentzian dS(2) evolution followed by flat space evolution. It is found that naive hyperbolic space geometry leads to paradoxes, which can be resolved by incorporating bra-ket wormholes. Despite issues with divergent temperatures, projection onto low energy states reveals similarities with the previous Euclidean case, suggesting a connection between maximum entropy and de Sitter entropy.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Vijay Balasubramanian et al.
Summary: The study utilizes the replica method to compute the entanglement entropy of a universe without gravity entangled with a disjoint gravitating universe in a quantum state. It reveals that at high entanglement temperatures, the island in the gravitating universe contributes to a bound on entanglement entropy in a manner akin to evaporating black holes. Additionally, it demonstrates that the entanglement wedge of the non-gravitating universe expands with increasing entanglement temperature, ultimately allowing for complete reconstruction of the gravitating universe.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Vijay Balasubramanian et al.
Summary: We study black holes in 2D de Sitter JT gravity coupled to a CFT, entangled with matter in a non-gravitating universe. The entropy of the entangled matter increases indefinitely with entanglement strength, but must level off due to monogamy. The competition between field theory entanglement entropy and extremal islands in the de Sitter geometry plays a key role in stabilizing the entropy growth.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Watse Sybesma
Summary: In de Sitter space, using the quantum Ryu-Takayanagi or island formula, entanglement entropy between states inside and outside the cosmological horizon was computed, resulting in the formation of an 'island' at the transition point which is significantly different from black hole horizons and may move back in time. These differences are crucial for non-violation of the no-cloning theorem in entanglement wedge reconstruction. Additionally, the introduction of a scrambling time reveals an entropy dependence expected for black holes.
CLASSICAL AND QUANTUM GRAVITY
(2021)
Article
Astronomy & Astrophysics
Leonard Susskind
Summary: The Goheer-Kleban-Susskind no-go theorem highlights the incompatibility between the symmetry of de Sitter space and finite entropy. Recent developments suggest that eternal de Sitter space, if it exists, may just be an ensemble average.
Article
Physics, Multidisciplinary
Hao Geng et al.
Summary: The late-time dominance of entanglement islands is crucial in addressing the information paradox for AdS black holes coupled to a non-gravitational bath. When considering entanglement between different sectors, non-trivial time-dependence is observed. However, discontinuous changes in entropy properties occur with variations in the angle.
Review
Physics, Multidisciplinary
Ahmed Almheiri et al.
Summary: This review discusses recent progress on the black hole information problem, focusing on a new understanding of calculating the entropy of Hawking radiation. It shows how the method for computing gravitational fine-grained entropy can be extended to account for the entropy of Hawking radiation, revealing significant corrections needed for consistency with unitary black hole evaporation.
REVIEWS OF MODERN PHYSICS
(2021)
Article
Physics, Particles & Fields
Hao Geng et al.
Summary: The study explores the AdS/BCFT duality between two-dimensional conformal field theories and three-dimensional anti-de Sitter space with KarchRandall branes, focusing on entanglement entropy and communication between braneworld black holes. A consistent Page curve is found, with gravitational results matching field theory calculations. At zero temperature, an interesting extension to the AdS3/BCFT2 correspondence is uncovered, revealing different gravitational duals based on the value of Delta bcc.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Multidisciplinary Sciences
Sayantan Choudhury et al.
Summary: This paper studies cosmological circuit complexity in the presence or absence of quantum extremal islands in negative or positive cosmological constants. It concludes the non-universality of these measures in different parameter space, suggesting their dependence on the parameters of the model under consideration.
Article
Physics, Particles & Fields
Lars Aalsma et al.
Summary: Recent research has shown that quantum extremal islands can contribute to the fine-grained entropy of black hole radiation, reproducing the unitary Page curve. In de Sitter space, an observer may be able to decode information hidden behind the cosmological horizon, but this could potentially lead to the observer hitting a singularity that forms earlier than the Page time.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Hao Geng et al.
Summary: The study formulates a version of the information paradox in de Sitter spacetime, which is resolved by the emergence of entanglement islands as shown in the De Sitter/de Sitter correspondence, leading to a time-dependent Page curve for the entanglement entropy. It suggests that the distribution of microscopic degrees of freedom depends on descriptions, with differences between the static and global descriptions of de Sitter spacetime.
Article
Physics, Particles & Fields
Ahmed Almheiri et al.
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Ahmed Almheiri et al.
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Jordan Cotler et al.
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Geoffrey Penington
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Thomas Hartman et al.
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Ahmed Almheiri et al.
JOURNAL OF HIGH ENERGY PHYSICS
(2019)
Review
Physics, Multidisciplinary
Pasquale Calabrese et al.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2009)
