Article
Physics, Particles & Fields
Mike Blake, Hong Liu
Summary: This paper presents evidence for the hydrodynamic origin of chaos in maximally chaotic systems and discusses the hallmarks of such systems, including the suppression of exponential growth in commutator squares of generic few-body operators. The study suggests that the nature of operator scrambling in maximally chaotic systems is fundamentally different from non-maximally chaotic systems. Additionally, the paper explores a scenario for the existence of a maximally chaotic regime in non-maximally chaotic systems at sufficiently large distances.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Elena Caceres, Arnab Kundu, Ayan K. Patra, Sanjit Shashi
Summary: This research focuses on the analytic continuations of holographic renormalization group (RG) flows beyond their infrared (IR) fixed points, which provide a natural framework for describing physics inside black holes. The study constructs a monotonic holographic a-function for counting degrees of freedom along a trans-IR flow. It is argued that the degrees of freedom become sparse and vanish when reaching a trans-IR endpoint represented by a Kasner singularity. Furthermore, the research demonstrates that entanglement and complexity from volume are generally insufficient in probing the trans-IR flows, while 2-point correlations and complexity from action are complementary and more effective in this regard.
Article
Physics, Particles & Fields
Florian Ecker, Carlos Valcarcel, Dmitri Vassilevich
Summary: In this paper, holographic counterterms and asymptotic conditions are proposed for a family of asymptotically AdS(2) dilaton gravity models, leading to a consistent variational problem and a finite on-shell action. The presence of asymptotic Virasoro symmetries in all these models is shown, with the Schwarzian action generating part of the equations of motion governing the asymptotic degrees of freedom. The applicability of various entropy formulae is also analyzed, with the results extended to a larger class of models through a dilaton-dependent conformal transformation.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Remigiusz Durka, Jerzy Kowalski-Glikman
Summary: In this article, we study two BF formulations of gravity, Plebanski theory and MacDowell-Mansouri theory, which both have a negative cosmological constant. While both theories give the standard Einstein equations in the bulk, they differ in the expressions of edge charges. We explicitly compute the asymptotic charges for AdS-Schwarzschild, AdS-Kerr, and AdS-Taub-NUT solutions, and we find that the charges diverge in Plebanski theory but are finite in MacDowell-Mansouri theory. Furthermore, we demonstrate that the MacDowell-Mansouri asymptotic charges, action, and symplectic form are all finite for arbitrary asymptotically AdS spacetimes. Therefore, the MacDowell-Mansouri theory of gravity in asymptotically AdS spaces does not require any counterterms.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Rong-Xin Miao
Summary: In this paper, a codimension two holography called wedge holography is introduced as a generalization of AdS/CFT, with exact construction of gravitational solutions provided. The equivalence between wedge holography and AdS/CFT for vacuum Einstein gravity is proven, leading to insights on holographic Weyl anomaly, Entanglement/Renyi entropy and correlation functions. The study also extends to dS/CFT and flat space holography, revealing a unification of different holographic models in the framework of codimension two holography in asymptotically AdS.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Peng-Ju Hu, Rong-Xin Miao
Summary: This paper investigates the effective action, mass spectrum, and the first law of entanglement entropy for a novel doubly holographic model called wedge holography. The effective theory on the brane behaves like massless Einstein gravity, demonstrating ghost-free multi-gravity characteristics. The analysis reveals a massless mode of gravitons on the end-of-the-world branes in wedge holography and verifies the first law of entanglement entropy.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Molly Kaplan, Donald Marolf
Summary: We study the action of Hubeny-Rangamani-Takayanagi (HRT) area operators on the covariant phase space and give a sharp argument for a precise result in a general theory of Einstein-Hilbert gravity coupled to matter. We find that this transformation is singular in the deep UV when the HRT surface is anchored to an asymptotically AdS boundary.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Xi Dong, Donald Marolf, Pratik Rath, Amirhossein Tajdini, Zhencheng Wang
Summary: This paper explores the Lorentz-signature spacetime geometry intrinsic to fixed-area states. It analyzes the general features of fixed-area state geometries, constructs explicit examples, and finds that the classical metrics are real at real times and have no conical singularities. However, at the quantum level, quantum fields in fixed-area states feature stronger divergences.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Juan F. Pedraza, Andrew Svesko, Watse Sybesma, Manus R. Visser
Summary: The study investigates the thermodynamic properties of Quantum Extremal Surfaces (QES) in the semi-classical JT gravity, showing that the Wald entropy fully encapsulates the generalized entropy and deriving the first law of nested Rindler wedge thermodynamics. In the microcanonical ensemble, the semi-classical first law implies the QES's generalized entropy is stationary at fixed energy, suggesting an equivalence between the thermodynamics of the nested Rindler wedge and QES.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Qi-Lin Hu, Dongqi Li, Rong-Xin Miao, Yu-Qian Zeng
Summary: In this paper, we investigate AdS/BCFT for curvature-squared gravity and the holographic g-theorem for Gauss-Bonnet gravity. We derive the one point function of stress tensor and find positive central charge for couplings obeying causality constraints. We also study AdS/BCFT for general curvature-squared gravity and propose a new boundary condition for the massive graviton, resulting in non-trivial shape dependence of stress tensor and well-defined central charges. Finally, we discuss the island and show the recovery of Page curve for Gauss-Bonnet gravity.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Alex May
Summary: This article explores quantum tasks where inputs and outputs are encoded into extended spacetime regions, leading to stronger constraints than previously derived in point-based settings. The improved connected wedge theorem is shown to imply large boundary correlation with the existence of a larger bulk region. Furthermore, considering extended input and output regions in Poincare-AdS(2+1) results in non-trivial statements, contrasting with the trivial nature of the point-based connected wedge theorem in this setting.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Peng-Ju Hu, Dongqi Li, Rong-Xin Miao
Summary: This paper explores the island phenomenon on codimension-two branes in AdS/dCFT, which is closely related to conical singularity and differs significantly from codimension-one branes. The analysis reveals that the mass spectrum of gravitons on the codimension-two brane depends on the brane tension, and the first massive gravitational mode is located on the brane. Additionally, the Page curve of eternal black holes can be recovered due to the presence of the island on the codimension-two brane.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Dongqi Li, Rong-Xin Miao
Summary: This paper investigates the relationship between cone holography and DGP gravity, and finds the existence of massless entanglement islands and Page curves in cone holography. By discussing the effective action, mass spectrum, and holographic entanglement entropy, it is verified that there is massless gravity on the planes, and non-trivial entanglement islands and Page curves are recovered. Compared to wedge holography, cone holography has several new features, such as the inability to add DGP gravity on the codim-2 E brane and the limited definition of the Hartman-Maldacena surface. The findings provide further support for the consistency between entanglement islands and massless gravity theories.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Rong-Xin Miao
Summary: This paper investigates the existence of entanglement islands in gravity theories. It is found that entanglement islands disappear in massless gravity, resulting in a time-independent constant entanglement entropy of Hawking radiation and the absence of a Page curve. However, by introducing appropriate gravity theories, we recover massless entanglement islands in wedge holography and obtain non-trivial Page curves. This supports the existence of entanglement islands in long-range gravity theories.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Chong-Sun Chu, Rong-Xin Miao
Summary: This paper investigates the further consequences of the conformal boundary condition in AdS/BCFT and derives the boundary central charges of the holographic Weyl anomaly. The study reveals the existence of non-trivial gravitational dynamics on the conformal and Dirichlet branes, which are closely related to the formation of islands.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Mathematical
Matthew Headrick, Barton Zwiebach
COMMUNICATIONS IN MATHEMATICAL PHYSICS
(2020)
Article
Physics, Particles & Fields
Sean Colin-Ellerin, Veronika E. Hubeny, Benjamin E. Niehoff, Jonathan Sorce
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Physics, Particles & Fields
Temple He, Veronika E. Hubeny, Mukund Rangamani
JOURNAL OF HIGH ENERGY PHYSICS
(2020)
Article
Astronomy & Astrophysics
Nemanja Kaloper, Morgane Konig, Albion Lawrence, James H. C. Scargill
Summary: This paper revisits two-field hybrid inflation as an effective field theory for low-scale inflation. By focusing on a prototype model by Stewart, it explores the red spectral tilt and constraints of the model, as well as discusses the stability of the model to quantum corrections. The paper suggests that an additional mechanism may be required to ensure stability against corrections from both quantum field theory and quantum gravity.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Physics, Particles & Fields
Jewel K. Ghosh, R. Loganayagam, Siddharth G. Prabhu, Mukund Rangamani, Akhil Sivakumar, V. Vishal
Summary: This text discusses how planar black holes in AdS capture the physics of diffusion in the dual field theory with their long-lived quasinormal modes, and explores how a probe system can record the long-term memory of black holes. By introducing a universal gauge invariant framework and designer scalars, the physics of gauge and gravitational perturbations of planar Schwarzschild-AdS black holes can be efficiently captured, separating long-lived modes from short-lived ones.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Sean Colin-Ellerin, Xi Dong, Donald Marolf, Mukund Rangamani, Zhencheng Wang
Summary: This work is the first step in studying real-time replica wormholes, focusing on the associated real-time gravitational path integral and the construction of variational principles for saddle points. The resulting saddle points involve complex metrics and can be accessed by deforming the original contour of integration, without relying on analytic continuation. Additionally, for replica- and CPT-symmetric saddles, the metrics can be real in regions spacelike separated from a 'splitting surface', which is an important hallmark of unitarity in a field theory dual.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Sean Colin-Ellerin, Xi Dong, Donald Marolf, Mukund Rangamani, Zhencheng Wang
Summary: The study continues the exploration of real-time replica wormholes, focusing on analytical computation of dynamics in low-dimensional gravitational theories. Examples in JT gravity and holographic two-dimensional CFTs are provided to demonstrate the computation of Renyi entropies, particularly the large central charge result for subregions comprising disjoint intervals from the real-time path integral.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Eduardo Casali, Donald Marolf, Henry Maxfield, Mukund Rangamani
Summary: This article discusses the relationship between the quantum gravity path integral and worldsheet string theory and Feynman diagrams of quantum field theory. It points out the various discrete choices that must be made in constructing a Hilbert space from such path integrals, and argues that the natural choices for quantum gravity differ from those used to construct quantum field theories.
CLASSICAL AND QUANTUM GRAVITY
(2022)
Article
Physics, Particles & Fields
Temple He, R. Loganayagam, Mukund Rangamani, Julio Virrueta
Summary: This article discusses the physics of momentum diffusion in a charged plasma and constructs an open effective field theory using holographic strategy.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Chi-Ming Chang, Sean Colin-Ellerin, Cheng Peng, Mukund Rangamani
Summary: This study investigates a three-dimensional disordered supersymmetric field theory, showing that the theory flows to a strongly coupled superconformal fixed point in the infra-red. The research obtains leading large N spectral data and operator product coefficients at the critical point, and demonstrates consistency with general expectations through comparisons with results derived in the conformal bootstrap program.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Multidisciplinary
Chi-Ming Chang, Sean Colin-Ellerin, Cheng Peng, Mukund Rangamani
Summary: In this paper, we present a one-parameter family of large N disordered models in three dimensions, with and without supersymmetry. These models interpolate between the critical large N vector model and a classical higher spin theory, as well as a theory with a classical string dual. We analyze the spectrum and operator product expansion data of these theories, and discuss the behavior of both supersymmetric and nonsupersymmetric models.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Mathematical
Matthew Headrick, Jesse Held, Joel Herman
Summary: This study investigates the ability to compute the entropy of a given set of boundary regions using a single thread configuration under different density bounds. It is shown that under the most stringent bound, non-crossing regions can be locked, but crossing regions cannot. Under a less stringent density bound, a crossing pair can be locked, and it is conjectured that any set of regions not containing a pairwise crossing triple can be locked, analogous to networks.
COMMUNICATIONS IN MATHEMATICAL PHYSICS
(2022)
Article
Physics, Particles & Fields
Temple He, R. Loganayagam, Mukund Rangamani, Akhil Sivakumar, Julio Virrueta
Summary: This article investigates planar black holes in AdS, which are holographically dual to compressible relativistic fluids and possess long-lived phonon modes. These modes capture the physics of attenuated sound propagation and energy transfer in the plasma. The open effective field theory of the fluctuating phonon degree of freedom is described, and the dynamics of the phonon is encoded in a single scalar field with non-trivial spatial momentum dependence. The article also discusses the classification of gravitational modes based on their Markovianity index and remarks on the presence of additional spatially homogeneous zero modes.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Sergio Hernandez-Cuenca, Veronika E. Hubeny, Massimiliano Rota
Summary: This article investigates the relations between entanglement entropies for a holographic CFT boundary spacetime and proposes a reconstruction method of the holographic entropy cone. By studying graph models of holographic entanglement and extreme rays of the subadditivity cone, it is discovered that the reconstruction of the holographic entropy cone can be achieved with simple data.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
