Article
Physics, Particles & Fields
Kyoungho Cho, Kwangeon Kim, Kanghoon Lee
Summary: The paper introduces a novel off-shell recursion and graviton current for gravity in perturbative double field theory. By utilizing the perturbiner method, the graviton off-shell recursion is derived from the equations of motion for perturbative DFT, leading to explicit graviton off-shell currents. The classical double copy and KLT relation for gravity are discussed with insights into off-shell conservation of currents for nonlinear gauge choices.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
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
Physics, Particles & Fields
Venkatesa Chandrasekaran, Eanna E. Flanagan, Ibrahim Shehzad, Antony J. Speranza
Summary: The Brown-York stress tensor is generalized to null hypersurfaces in this paper. The formula for the mixed-index tensor is independent of the choice of auxiliary null vector and satisfies a conservation equation. The application of the null Brown-York stress tensor to symmetries is discussed.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Chang Liu, David A. Lowe
Summary: This study performs a mode expansion for massive scalar fields using the unitary principal series representations of SO(1,3), aiming to develop a holographic approach to gravity in asymptotically flat spacetime. These mode expansions are also useful for studying holography in three-dimensional de Sitter spacetime.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Romuald A. Janik, Matti Jarvinen, Jacob Sonnenschein
Summary: In the context of theories with a first order phase transition, a general covariant description of coexisting phases separated by domain walls using an additional order parameter-like degree of freedom is proposed. In the case of a holographic Witten model with a confining and deconfined phase, the resulting model extends hydrodynamics and has a simple formulation in terms of a spacetime action with corresponding expressions for the energy-momentum tensor. The proposed description leads to simple analytic profiles of domain walls, including expressions for surface tension density, which agree nicely with holographic numerical solutions, despite the apparent complexity of those gravitational backgrounds.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Laura Rado, Victor O. Rivelles, Renato Sanchez
Summary: We investigated three-parameter Yang-Baxter deformations of the AdS(5)x T-1,T-1 superstring for abelian r-matrices which are solutions of the classical Yang-Baxter equation. We discovered the NSNS fields of two new backgrounds that are dual to the dipole deformed Klebanov-Witten gauge theory and to the nonrelativistic Klebanov-Witten gauge theory with Schrodinger symmetry.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
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
Cameron Gray, Vatche Sahakian, William Warfield
Summary: The study reveals a direct link between the entanglement entropy of a probe giant graviton and the local tidal acceleration experienced by the probe in a specific theoretical framework, establishing a new connection between local spacetime geometry and quantum entanglement. Expanding this theory to different backgrounds, a new relationship is conjectured between entanglement in Matrix theories and local spacetime geometry. This relationship involves a 'c-tensor' measuring the evolution of local transverse area and its connection to the local energy-momentum tensor measured by a probe.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Dominik Neuenfeld, Manu Srivastava
Summary: This paper discusses the relationship between holography on cutoff surfaces and causality. By treating the brane description of double holography as an effective theory, it is demonstrated that causality violations due to faster-than-light communication are not observable above the associated cutoff length scale. The study suggests that short distance non-localities can lead to apparent faster-than-light propagation of signals in Anti-de Sitter space.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Pablo A. Cano, Angel J. Murcia, Alberto Rivadulla Sanchez, Xuao Zhang
Summary: We have conducted an extensive study on the holographic aspects of higher-derivative Einstein-Maxwell theories in any dimension. By introducing electromagnetic quasitopological gravities and imposing various physical constraints, we have analyzed charged black hole solutions, thermodynamic properties at finite chemical potential, shear viscosity to entropy density ratio, and charged Renyi entropies. Our results show the possibility of achieving zero viscosity to entropy density ratio and preserving the usual properties of Renyi entropies while satisfying the physical constraints.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Giorgos Anastasiou, Ignacio J. Araya, Robert B. Mann, Rodrigo Olea
Summary: In this study, the renormalization of Entanglement Entropy in holographic CFTs dual to Lovelock gravity is investigated. A new renormalization prescription for the Jacobson-Myers functional is proposed through the Kounterterm renormalization procedure, which effectively cancels divergences in the EE for spherical entangling surfaces. This method provides C-function candidates for odd and even dimensional CFTs dual to Lovelock gravity without requiring limiting Einstein behavior of the theory.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Adrien Fiorucci, Romain Ruzziconi
Summary: The gravitational charge algebra of generic asymptotically locally (A)dS spacetimes is derived in n dimensions without further boundary conditions, resulting in finite expressions after removing divergences using holographic renormalization procedure. The charges associated with boundary diffeomorphisms are generally non-vanishing, non-integrable, and not conserved, while those associated with boundary Weyl rescalings are non-vanishing only in odd dimensions, with a field-dependent 2-cocycle present. The analysis is specialized to different boundary conditions, such as Dirichlet boundary conditions and leaky boundary conditions, leading to various results such as the Brown-Henneaux central extension and the Lambda-BMS asymptotic symmetry group. In the flat limit, the asymptotic symmetry group contracts to the BMS group in n dimensions.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Niko Jokela, Javier G. Subils
Summary: In this study, various entanglement measures in a one-parameter family of three-dimensional, strongly coupled Yang-Mills-Chern-Simons field theories are examined using their dual supergravity descriptions. The findings indicate that entanglement measures are unable to distinguish between theories with a mass gap that exhibit confinement and those that do not. Additionally, it is observed that at intermediate energy scales approaching a fixed point, holographic entanglement entropy, mutual information, and F-functions for strips and disks quantitatively match the conformal values.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Laura Rado, Victor O. Rivelles, Renato Sanchez
Summary: In this work, we construct string backgrounds for Yang-Baxter deformations of the AdS4 x CP3 superstring generated by r-matrices satisfying the classical Yang-Baxter equation. The metric and NSNS two-form of the gravity dual corresponding to noncommutative and dipole deformations of ABJM theory, as well as a deformed background with Schrodinger symmetry, are obtained. The first two backgrounds can also be obtained by TsT transformations, while the last background leads to a new family of non-relativistic ABJM theories with Schrodinger symmetry.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Georgios Katsianis, Ioannis Papadimitriou, Kostas Skenderis, Marika Taylor
Summary: The study provides a comprehensive analysis of supersymmetry anomalies in the Wess-Zumino model, discussing the anomalies and symmetry breaking caused by different multiplets of conserved currents. The research confirms the anomaly in Q-supersymmetry appearing in 4-point functions through explicit calculations and the action of regulators.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Multidisciplinary
Guido Cossu, Luigi Del Debbio, Andreas Juettner, Ben Kitching-Morley, Joseph K. L. Lee, Antonin Portelli, Henrique Bergallo Rocha, Kostas Skenderis
Summary: The study shows that superrenormalizable theories are nonperturbatively IR finite, with the coupling constant acting as an IR regulator. By a combination of methods including Markov Chain Monte Carlo simulations, frequentist and Bayesian data analysis, and considerations of an effective theory, evidence supporting this conclusion is gathered.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Jose Manuel Penin, Kostas Skenderis, Benjamin Withers
Summary: In this study, we investigate the properties of strongly coupled mass-deformed CFT on a fixed de Sitter spacetime using holography. We elucidate the causal structure of the four-dimensional spacetime dual to the de Sitter invariant vacuum state and compute the correlation functions of the deformed-CFT stress tensor and scalar operator at each order of the mass deformation.
Article
Physics, Particles & Fields
Adam Bzowski, Paul McFadden, Kostas Skenderis
Summary: In this paper, we present a comprehensive discussion on the tree-level holographic 4-point functions of scalar operators in momentum space. We demonstrate that each Witten diagram satisfies the conformal Ward identities independently, making it a valid conformal correlator. Furthermore, we provide explicit formulas for evaluating Witten diagrams when certain conditions are met. Renormalization is necessary for these correlators and it leads to new conformal anomalies and beta functions. We also explore the idea of weight-shifting operators to link correlators of operators with different dimensions.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Raffaele Marotta, Kostas Skenderis, Mritunjay Verma
Summary: We examined the 3-point CFT correlators involving non-conserved spinning operators in momentum space. A general expression for the conformal Ward identities defining the 3-point functions involving two generic spin s non-conserved operators and a spin 1 conserved current was derived. Explicit expressions for the 3-point function were provided when the two non-conserved operators have spins 1 and 2 and generic conformal dimensions. The divergences appearing in these 3-point functions when the conformal dimensions of the two non-conserved operators coincide were also systematically analyzed.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Physics, Particles & Fields
Marika Taylor
Summary: This study proposes a relationship between Zamoldchikov's TT deformation and the holographic theory dual to AdS3 at finite radius. The Gauss-Codazzi form of the Einstein equations is used to derive a relationship between the trace of the quasi-local stress tensor and a specific quadratic combination of this stress tensor on constant radius slices of AdS. The study also discusses the generalization of Zamoldchikov's TT over bar deformation to conformal field theories in general dimensions and the modification of the deforming operator to include appropriate terms for gravity with gauge or scalar fields.
ADVANCES IN THEORETICAL AND MATHEMATICAL PHYSICS
(2023)
Article
Astronomy & Astrophysics
Enrico Parisini, Kostas Skenderis, Benjamin Withers
Summary: We generalize the embedding space formalism to conformal field theories (CFTs) on nontrivial states and curved backgrounds using the ambient metric of Fefferman and Graham. The construction of CFT n-point functions in these settings is based on appropriate geometric invariants of the ambient space. Exact agreement with holographic computations and expectations from thermal operator product expansions (OPEs) is found for two-point functions of thermal CFT, and the method is also applied to CFTs on squashed spheres with no prior results available, demonstrating its utility.
Article
Astronomy & Astrophysics
Maximo Banados, Ernesto Bianchi, Ivan Munoz, Kostas Skenderis
Summary: We have developed a systematic procedure for renormalizing quantum field theories in anti-de Sitter spacetime. UV infinities are regulated using a geodesic point-splitting method, while IR infinities are regulated by cutting off the radial direction. We define the renormalized theory by introducing Z factors, boundary counterterm action, and renormalization conditions.
Article
Optics
Wangke Yu, Hailong Pi, Marika Taylor, Jize Yan
Summary: This paper introduces the total angular momentum-conserving Poincare sphere (TAM-C PS) as a novel framework for characterizing vector vortex beams. The TAM-C PS achieves a better balance between generality and validity compared to other types of Poincare spheres, and also provides clearer physical interpretation. By connecting the poles of different spheres, the study introduces two distinct categories of TAM-C PS braid clusters, which allows for the representation of various Poincare spheres within a unified framework. The TAM-C PS can be used to guide the creation of targeted vector vortex light beams, provide a geometric description of optical field evolution, and calculate the geometric phase of optical cyclic evolution.
Article
Astronomy & Astrophysics
Aaron Poole, Kostas Skenderis, Marika Taylor
Summary: In this paper, we discuss the definition of conserved quantities in asymptotically locally de Sitter spacetimes. We introduce the analog of holographic charges at future and past infinity and at other Cauchy surfaces, and explain the characteristics and changes of these charges.
Article
Quantum Science & Technology
Marika Taylor, Linus Too
Summary: In this paper, we develop generalized proofs of the holographic first law of entanglement entropy using holographic renormalization, and discuss in detail how counterterm contributions are treated in the covariant phase approach to proving the first law. Our methodology is applicable for generalizing other holographic information analyses to wider classes of gravitational backgrounds.
AVS QUANTUM SCIENCE
(2022)
Article
Astronomy & Astrophysics
Luigi Del Debbio, Elizabeth Dobson, Andreas Juttner, Ben Kitching-Morley, Joseph K. L. Lee, Valentin Nourry, Antonin Portelli, Henrique Bergallo Rocha, Kostas Skenderis
Summary: A nonperturbative determination of the energy-momentum tensor is crucial in understanding strongly coupled systems. The Wilson flow method is utilized to renormalize the energy-momentum tensor for a three-dimensional massless scalar field with a phi(4) interaction in the adjoint of SU(N) on the lattice, including numerical results for the mixing coefficient in the N = 2 theory.
Article
Physics, Particles & Fields
Adam Bzowski, Paul McFadden, Kostas Skenderis
Summary: The general solution of the conformal Ward identities for scalar n-point functions in momentum space and general dimension is found, which involves integrals over (n - 1)-simplices. The correlators exhibit a recursive structure when the function of cross ratios is a monomial.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)