Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Galante, Damián A."'
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-bound the Lyapunov exponent. We compute the Krylov and the Lyapunov expon
Externí odkaz:
http://arxiv.org/abs/2407.09604
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 curvature, $K$, are fixed at the boundary. We present the thermodynamic struc
Externí odkaz:
http://arxiv.org/abs/2402.04305
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 form $\boldsymbol{\sigma} \times \mathbb{R}$, with $\boldsymbol{\sigm
Externí odkaz:
http://arxiv.org/abs/2310.08648
Autor:
Galante, Damian A.
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 classical spacetime. We note the existence of a cosmological horizon and its a
Externí odkaz:
http://arxiv.org/abs/2306.10141
We explore computationally tractable deformations of the SYK model. The deformed theories are described by the sum of two SYK Hamiltonians with differing numbers, $q$ and $\tilde{q}$, of interacting fermions. In the large $N$ limit, employing analyti
Externí odkaz:
http://arxiv.org/abs/2212.04944
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 space, however, this poses a puzzle. Certain spacelike separated points
Externí odkaz:
http://arxiv.org/abs/2212.01398
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 compute dynamical properties of the static patch de Sitter horizon. These a
Externí odkaz:
http://arxiv.org/abs/2206.14146
Publikováno v:
JHEP 06 (2022) 068
Charged and symmetry-resolved R\'enyi entropies are entanglement measures quantifying the degree of entanglement within different charge sectors of a theory with a conserved global charge. We use holography to determine the dependence of charged R\'e
Externí odkaz:
http://arxiv.org/abs/2203.15028
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 Sitter but they admit either a de Sitter or a black hole event horizon in t
Externí odkaz:
http://arxiv.org/abs/2110.05522
Autor:
Anninos, Dionysios, Galante, Damián A.
We consider two-dimensional geometries flowing away from an asymptotically AdS$_2$ spacetime. Macroscopically, flow geometries and their thermodynamic properties are studied from the perspective of dilaton-gravity models. We present a precise map con
Externí odkaz:
http://arxiv.org/abs/2011.01944