144 citations · 922 across the 26 of their papers we have counts for
29 papers
Umbilic Observatories
Dionysios Anninos, Raúl Arias, Damián A Galante
We study gravitational dynamics for the simplest example of an umbilic boundary in four-dimensional general relativity --- a three-dimensional de Sitter hypersurface embedded in a…
The Stretched Horizon Limit
Dionysios Anninos, Damián A. Galante, Silvia Georgescu +2
We consider four-dimensional general relativity with a positive cosmological constant, , in the presence of a boundary, , of finite spatial size. The boundary is located near…
Conformal Boundary Conditions and Higher Curvature Gravity
Damián A. Galante, Robert C. Myers, Themistocles Zikopoulos
We initiate a systematic study of Einstein-Gauss-Bonnet gravity in the presence of boundaries subject to conformal boundary conditions, in which the conformal class of the boundary…
Exploring the Infrared Landscape of the SYK Model
Weam Abou Hamdan, Damián A. Galante
We analyse a class of SYK models whose Hamiltonian is the sum of two SYK Hamiltonians with different numbers of fermions in each interaction. We consider both Euclide…
Conformal boundaries near extremal black holes
Damián A. Galante, Chawakorn Maneerat, Andrew Svesko
We examine four dimensional, near-extremal black hole solutions in the presence of a finite boundary obeying conformal boundary conditions, where the conformal class of the induced…
Gravitational Observatories in AdS
Dionysios Anninos, Raúl Arias, Damián A. Galante +1
We consider four-dimensional general relativity with a negative cosmological constant in the presence of a finite size boundary, , for both Euclidean and Lorentzian signature. A…
Krylov complexity and chaos in deformed SYK models
Shira Chapman, Saskia Demulder, Damián A. Galante +2
Krylov complexity has recently been proposed as a quantum probe of chaos. The Krylov exponent characterising the exponential growth of Krylov complexity is conjectured to upper-bou…
Cosmological Observatories
Dionysios Anninos, Damián A. Galante, Chawakorn Maneerat
We study the static patch of de Sitter space in the presence of a timelike boundary. We impose that the conformal class of the induced metric and the trace of the extrinsic curvatu…
Gravitational Observatories
Dionysios Anninos, Damián A. Galante, Chawakorn Maneerat
We consider four-dimensional general relativity with vanishing cosmological constant defined on a manifold with a boundary. In Lorentzian signature, the timelike boundary is of the…
Modave Lecture Notes on de Sitter Space & Holography
Damian A. Galante
These lecture notes provide an overview of different aspects of de Sitter space and their plausible holographic interpretations. We start with a general description of the classica…
Renormalisation Group Flows of Deformed SYK Models
Dionysios Anninos, Damián A. Galante, Sameer U. Sheorey
We explore computationally tractable deformations of the SYK model. The deformed theories are described by the sum of two SYK Hamiltonians with differing numbers, and $\tilde{q…
Complex geodesics in de Sitter space
Shira Chapman, Damián A. Galante, Eleanor Harris +2
The two-point function of a free massive scalar field on a fixed background can be evaluated in the large mass limit by using a semiclassical geodesic approximation. In de Sitter s…
Finite Features of Quantum De Sitter Space
Dionysios Anninos, Damián A. Galante, Beatrix Mühlmann
We consider degrees of freedom for a quantum de Sitter spacetime. The problem is studied from both a Lorentzian and a Euclidean perspective. From a Lorentzian perspective, we compu…
Shape Deformations of Charged Rényi Entropies from Holography
Stefano Baiguera, Lorenzo Bianchi, Shira Chapman +1
Charged and symmetry-resolved Rényi entropies are entanglement measures quantifying the degree of entanglement within different charge sectors of a theory with a conserved global c…
Holographic Complexity and de Sitter Space
Shira Chapman, Damián A. Galante, Eric David Kramer
We compute the length of spacelike geodesics anchored at opposite sides of certain double-sided flow geometries in two dimensions. These geometries are asymptotically anti-de Sitte…
Constructing AdS_2 flow geometries
Dionysios Anninos, Damián A. Galante
We consider two-dimensional geometries flowing away from an asymptotically AdS spacetime. Macroscopically, flow geometries and their thermodynamic properties are studied from t…
Traversable wormholes in AdS and bounds on information transfer
Ben Freivogel, Damián A. Galante, Dora Nikolakopoulou +1
We analyze the amount of information that can be sent through the traversable wormholes of Gao, Jafferis, and Wall. Although we find that the wormhole is open for a proper time sho…
De Sitter Horizons & Holographic Liquids
Dionysios Anninos, Damián A. Galante, Diego M. Hofman
We explore asymptotically AdS solutions of a particular two-dimensional dilaton-gravity theory. In the deep interior, these solutions flow to the cosmological horizon of dS…
An exactly solvable quench protocol for integrable spin models
Diptarka Das, Sumit R. Das, Damián A. Galante +2
Quantum quenches in continuum field theory across critical points are known to display different scaling behaviours in different regimes of the quench rate. We extend these results…
Shape Dependence of Holographic Rényi Entropy in General Dimensions
Lorenzo Bianchi, Shira Chapman, Xi Dong +3
We present a holographic method for computing the response of Rényi entropies in conformal field theories to small shape deformations around a flat (or spherical) entangling surfac…
Quantum Quenches in Free Field Theory: Universal Scaling at Any Rate
Sumit R. Das, Damian A. Galante, Robert C. Myers
Quantum quenches display universal scaling in several regimes. For quenches which start from a gapped phase and cross a critical point, with a rate slow compared to the initial gap…
Comments on Jacobson's "Entanglement equilibrium and the Einstein equation"
Horacio Casini, Damian A. Galante, Robert C. Myers
Using holographic calculations, we examine a key assumption made in Jacobson's recent argument for deriving Einstein's equations from vacuum entanglement entropy. Our results invol…
Smooth and fast versus instantaneous quenches in quantum field theory
Sumit R. Das, Damián A. Galante, Robert C. Myers
We examine in detail the relationship between smooth fast quantum quenches, characterized by a time scale , and {\em instantaneous quenches}, within the framework of exactly so…
Universality in fast quantum quenches
Sumit R. Das, Damián A. Galante, Robert C. Myers
We expand on the investigation of the universal scaling properties in the early time behaviour of fast but smooth quantum quenches in a general -dimensional conformal field theo…