Article
Physics, Multidisciplinary
Antonia M. Frassino, Juan F. Pedraza, Andrew Svesko, Manus R. Visser
Summary: Holographic braneworlds provide a higher-dimensional origin for extended black hole thermodynamics, where classical black holes are mapped to quantum black holes with one less dimension, and the conformal matter sector on the brane affects the brane geometry. Varying the brane tension leads to a dynamical cosmological constant and a variable pressure attributed to the brane black hole. Thus, the standard thermodynamics in the bulk induces extended thermodynamics on the brane, including a work term from the brane, to all orders in backreaction. A microscopic interpretation of the extended thermodynamics of specific quantum black holes is given via double holography.
PHYSICAL REVIEW LETTERS
(2023)
Article
Physics, Particles & Fields
Mohsen Alishahiha, Amin Faraji Astaneh, Ali Naseh
Summary: By employing the extended island formula, we computed the entanglement entropy of Hawking radiation for black hole solutions of certain gravitational models containing higher derivative terms. Our results showed that despite the non-unitarity of the corresponding gravitational models, the entropy followed the Page curve, thanks to the contribution of the island.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Nuclear
Xiangqing Kong, Zhiqiang Zhang, Liu Zhao
Summary: The thermodynamics of charged spherically symmetric AdS black holes in conformal gravity is revisited using the recently proposed restricted phase space (RPS) formalism. It is found that the charged AdS black holes in this model may belong to a new universality class different from all previously studied cases under the RPS formalism. The absence of the Hawking-Page transition is another notable feature.
Article
Physics, Particles & Fields
Alex May, Mark Van Raamsdonk
Summary: The paper explains approximating states of a holographic CFT by states of non-interacting BCFTs and reintroducing couplings to make wormholes traversable, creating an intermediate class of geometries.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Cesar A. Agon, Elena Caceres, Juan F. Pedraza
Summary: In the context of holography, entanglement entropy can be studied using extremal surfaces or bit threads, a divergenceless vector field approach. This paper develops a new method for metric reconstruction based on the latter, showing advantages over existing methods. It is demonstrated that perturbed thread configurations can encode metric information in a highly nonlocal way, but a canonical choice for perturbations can be made for boundary regions with a local modular Hamiltonian. The Iyer-Wald formalism provides a natural candidate for a canonical local perturbation, facilitating the inversion of a linear differential operator for metric reconstruction.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Gregory Gabadadze
Summary: The paper reconsiders the question of constructing a locally diffeomorphism-invariant effective gravitational action for the trace anomaly. Combining General Relativity (GR) with the existing action for the trace anomaly is inconsistent as a low energy effective field theory. The inconsistency is resolved by extending GR into a scalar-tensor theory that preserves the GR trace anomaly equation up to higher order corrections. The resulting theory introduces a new mass scale that governs high-dimensional terms in a locally diffeomorphism-invariant trace anomaly action.
Article
Physics, Particles & Fields
Till Heckelbacher, Ivo Sachs
Summary: In this study, we consider the semi-classical expansion of the Bunch-Davies wavefunction with future boundary condition for a real scalar field conformally coupled to a classical de Sitter background. The wave function takes the form of the generating functional of a Euclidean conformal field theory in the future boundary limit, for which we calculate anomalous dimensions of double trace deformations at one loop order. Additionally, we find analytic expressions for some subleading twist operators and present an algorithm for obtaining expressions for general twist.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Scott Collier, Alexander Maloney
Summary: This paper studies the spectral statistics of primary operators in the ensemble average of Narain's family of free boson conformal field theories, by computing higher-degree Eisenstein series. The results show that the spectral form factor does not exhibit a linear ramp.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Yue-Zhou Li, H. Lu, Liang Ma
Summary: In this paper, the holographic central charges and OPE coefficients in four-dimensional CFTs are derived using AdS gravity as an effective field theory, with a focus on their invariance under metric field redefinition and a hidden relation among the OPE coefficients. Furthermore, it is proven that a specific relation holds for massless AdS gravity constructed from the most general Riemann tensor invariants, demonstrating the consistency of the derived results.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Qiang Wen
Summary: In this article, we introduce a new information theoretical quantity called balanced partial entanglement (BPE) for any bipartite mixed state. We discuss its relation with purifications and find that in holographic CFT2, BPE equals the area of the entanglement wedge cross section divided by 4G.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Hare Krishna, D. Rodriguez-Gomez
Summary: In this study, 2-point correlation functions for scalar operators in position space are examined using holography, with a focus on operators with large conformal dimensions. The geodesic approximation is utilized for propagators. In addition to the main contribution, a correction involving bulk cubic couplings and higher curvature couplings is identified, which provides insight into the interior of a black hole.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Yi-Yu Lin, Jia-Rui Sun, Jun Zhang
Summary: In this study, the partial entanglement entropy is explicitly interpreted as component flow flux in a locking bit thread configuration within the holographic framework. By applying the locking theorem of bit threads, a set of uniquely determined component flow fluxes is obtained, and the PEE proposal and its generalized version in multipartite cases are successfully derived. Furthermore, a coherent explanation is presented for the coincidence between the BPE/EWCS duality and the EoP/EWCS duality, based on the perspective of bit threads.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Diptarka Das, Shouvik Datta
Summary: In this study, the connection between spacetime wormholes and ensemble averaging in higher spin AdS(3)/CFT2 is investigated. By evaluating the partition function of a Euclidean wormhole in AdS(3) higher spin gravity using modular bootstrap techniques and holographic inputs, it is found that the fixed spin sectors of the dual CFT2 exhibit features that go beyond conventional random matrix ensembles.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Multidisciplinary
Simone Giombi, Himanshu Khanchandani, Xinan Zhou
Summary: In this study, conformal field theories on the real projective space RPd were analyzed, focusing on the two-point functions of scalar operators. Based on calculations of Witten diagrams on the quotient space AdS(d+1)/Z(2), an analytic approach to two-point functions was developed by converting the structure of conformal block decomposition into specific sum rules.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2021)
Review
Physics, Multidisciplinary
Claudio Coriano, Matteo Maria Maglio
Summary: This article provides an overview of conformal field theories in coordinate space, focusing on the solution of conformal constraints for three- and four-point functions in momentum space. The study discusses the characteristics of correlators containing stress-energy tensors, conserved currents, and scalar operators, along with anomalies and dual conformal solutions identified by CWIs. Perturbative realizations of CFTs at one-loop are also explored, offering insights into the general solutions identified by CWIs for various operators.
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
(2022)
Article
Physics, Particles & Fields
Giorgos Anastasiou, Ignacio J. Araya, Rodrigo Olea
Summary: This study extends Maldacena's argument to six-dimensional manifolds, showing that 6D Conformal Gravity can yield an Einstein gravity sector. Through the use of generalized Neumann boundary conditions, the Conformal Gravity action is reduced to the renormalized Einstein-AdS action. The equivalence between Conformal and Einstein gravity simplifies the Einstein solutions of 6D Critical Gravity at the bicritical point.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
L. Andrianopoli, B. L. Cerchiai, R. Matrecano, O. Miskovic, R. Noris, R. Olea, L. Ravera, M. Trigiante
Summary: This paper extensively explores the holographic framework of an N=2 pure AdS supergravity model in four dimensions, focusing on the asymptotic symmetries at the boundary and their related properties. The consistency of the holographic setup requires the vanishing of super-AdS curvatures at the boundary, resulting in special properties for the boundary of the gravitational theory.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Pablo Guilleminot, Felix-Louis Julie, Nelson Merino, Rodrigo Olea
Summary: Based on the insights gained by various authors on the structure of Einstein-Hilbert, Gauss-Bonnet, and Lovelock gravity Lagrangians, this paper demonstrates how to derive their first-order generalized 'Arnowitt-Deser-Misner' Lagrangian and associated Hamiltonian in a simple manner. The derivation begins with the Lovelock Lagrangian supplemented with the Myers boundary term, ensuring a Dirichlet variational principle with a specific surface term. The first-order Lagrangian density is obtained by integrating the canonical momentum over the metric derivative normal to the boundary or by converting the Myers term into a bulk term.
CLASSICAL AND QUANTUM GRAVITY
(2021)
Article
Physics, Particles & Fields
Laura Andrianopoli, Gaston Giribet, Dario Lopez Diaz, Olivera Miskovic
Summary: We study static black hole solutions with locally spherical horizons coupled to non-Abelian fields in N = 4 Chern-Simons AdS5 supergravity, characterized by three parameters related to mass, axial torsion, and internal soliton amplitude, as well as two parameters related to gravitational hair. The solutions describe geometries that can be global AdS spaces, naked singularities, or (non-)extremal black holes. In different asymptotically AdS solutions, physical properties vary depending on whether the spatial section at radial infinity is a 3-sphere or projective 3-space. The 3-parametric solutions possess a topological structure including SU(2) solitons with nontrivial winding around the black hole horizon, with interesting features in the extremal black hole limit.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Alessio Marrani, Olivera Miskovic, Paula Quezada Leon
Summary: In this study, we investigate the phenomenon of spontaneous scalarization in electrically charged extremal black holes in D ≥ 4 spacetime dimensions. We find that scalar field condensates on the horizon only in non-flat spacetimes, with Λ not equal to 0, and when the extremal black holes have non-planar horizons k=+/-1. In order for the transition to happen, the interaction must be strong enough, and physical quantities on the horizon depend at most on the effective Higgs-Stueckelberg interaction am^2 - 2b.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Giorgos Anastasiou, Ignacio J. Araya, Rodrigo Olea
Summary: In this paper, we provide a new derivation of the Hawking mass and Willmore energy functionals by embedding Einstein-AdS gravity in Conformal Gravity. The codimension-2 conformal invariant functional L-Sigma is obtained by evaluating the four-dimensional Conformal Gravity action in a manifold with a conical defect. The results suggest a generic relation between conformal invariance and renormalization.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Giorgos Anastasiou, Ignacio J. Araya, Andres Argandona, Rodrigo Olea
Summary: In this study, we provide a covariant expression for the universal part of the holographic entanglement entropy in CFTs dual to higher curvature gravities, with up to five dimensions. We use this expression to calculate the universal coefficients of stress-tensor correlators in three-dimensional CFTs dual to Cubic Curvature Gravity. By employing gauge/gravity duality, we obtain an expression for the entanglement entropy of deformed entangling regions and extract the coefficients from the power expansion of the entropy. We compare our results obtained from different splittings with those derived from other holographic methods, finding agreement with the non-minimal splitting while ruling out the minimal splitting.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Hernan A. Gonzalez, Oriana Labrin, Olivera Miskovic
Summary: We discuss the emergence of a new symmetry generator in four-dimensional gauge theories in flat space. This generator produces an asymptotic symmetry that acts differently on asymptotic fields compared to large gauge transformations. The improved canonical generators, representing gauge and asymptotic symmetries, form a classical Kac-Moody charge algebra with a non-trivial central extension. In the case of electromagnetism, we describe the U(1) current algebra with a level proportional to the theory's coupling constant, & kappa; = 4 & pi;(2)/e(2). We also generalize these symmetries to non-Abelian theories by analyzing the evolution of Yang-Mills theory in Bondi coordinates.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Giorgos Anastasiou, Ignacio J. Araya, Cristobal Corral, Rodrigo Olea
Summary: In this article, a streamlined proof is presented to show that any Einstein-AdS space is a solution of the Lu, Pang and Pope conformal gravity theory in six dimensions. The reduction of conformal gravity into Einstein theory is demonstrated, indicating that the action of the latter can be expressed as the Einstein-Hilbert term plus the Euler topological density and an additional contribution related to the Laplacian of the bulk Weyl tensor squared. The method of embedding the Einstein theory into a Weyl-invariant purely metric theory, called Conformal Renormalization, is introduced, and its resulting action is shown to be equivalent to the one obtained by holographic renormalization. As an application, the Noether-Wald charges and thermodynamic quantities for topological black hole solutions with generic transverse section in Einstein-AdS(6) theory are computed.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Pablo Guilleminot, Nelson Merino, Rodrigo Olea
Summary: This study examines the matching conditions for a spherically symmetric thin shell in Lovelock gravity by analyzing the variation of the corresponding first-order action. It is found that by adding Myers' boundary terms to the gravitational action, the dependence on acceleration can be eliminated and the canonical momentum is included in the variation of the total action. This leads to junction conditions determined by the discontinuity of the canonical momentum along the boundary's normal evolution. Additionally, existing results on the collapse of thin shells in generic Lovelock theories are corrected due to an inaccurate analysis of the total derivative terms in the system.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Astronomy & Astrophysics
Olivera Miskovic, Rodrigo Olea, Yoel Parra-Cisterna
Summary: This study presents new formulas for calculating the energy of black hole solutions in the anti-de Sitter sector of gravity theory with curvature-squared terms. By adding counterterms of the extrinsic type, a finite variation of the total action is obtained, which is compatible with the boundary conditions in asymptotically AdS spaces within the framework of quadratic curvature gravity theory. The conserved charges derived from this method accurately reproduce the energy of static black holes in QCG theory, eliminating the need for background-subtraction or linearized methods.
Article
Astronomy & Astrophysics
Giorgos Anastasiou, Ignacio J. Araya, Javier Moreno, Rodrigo Olea, David Rivera-Betancour
Summary: The study presents a covariant expression for computing the renormalized holographic entanglement entropy for conformal field theories dual to quadratic curvature gravity in arbitrary dimensions. The method isolates the universal terms of the holographic entanglement entropy functional and is used to calculate the standard C-function candidate for CFTs in any dimension, as well as the type-B anomaly coefficient c for four-dimensional CFTs.
Article
Astronomy & Astrophysics
Cristobal Corral, Gaston Giribet, Rodrigo Olea
Summary: This study investigates non-Einstein Bach-flat gravitational instanton solutions as a generalization of Einstein gravity solutions to conformal gravity. These solutions exhibit different asymptotic conditions, thermodynamic properties, and geometrical characteristics, shedding light on the behaviors of conformal gravity.