538 citations · 1.2k across the 16 of their papers we have counts for
17 papers
Causality Constraints on Massive Gravity
Xián O. Camanho, Gustavo Lucena Gómez, Rakibur Rahman
The de Rham-Gabadadze-Tolley massive gravity admits pp-wave backgrounds on which linear fluctuations are shown to undergo time advances for all values of the parameters. The pertur…
(Not so) pure Lovelock Kasner metrics
Xián O. Camanho, Naresh Dadhich, Alfred Molina
The gravitational interaction is expected to be modified for very short distances. This is particularly important in situations in which the curvature of spacetime is large in gene…
Lovelock gravity, black holes and holography
Xián O. Camanho
This thesis is divided in two separate parts, the first concerned with gravitational aspects of Lovelock theories, the second with some of their holographic applications.
Pure Lovelock Kasner metrics
Xián O. Camanho, Naresh Dadhich, Alfred Molina
We study pure Lovelock vacuum and perfect fluid equations for Kasner-type metrics. These equations correspond to a single th order Lovelock term in the action in …
On AdS to dS transitions in higher-curvature gravity
Xian O. Camanho, Jose D. Edelstein, Andres Gomberoff +1
We study the possible existence of gravitational phase transitions from AdS to dS geometries in the context of higher-curvature gravities. We use Lanczos-Gauss-Bonnet (LGB) theory…
On Lovelock analogues of the Riemann tensor
Xián O. Camanho, Naresh Dadhich
It is possible to define an analogue of the Riemann tensor for th order Lovelock gravity, its characterizing property being that the trace of its Bianchi derivative yields the c…
Causality Constraints on Corrections to the Graviton Three-Point Coupling
Xian O. Camanho, Jose D. Edelstein, Juan Maldacena +1
We consider higher derivative corrections to the graviton three-point coupling within a weakly coupled theory of gravity. Lorentz invariance allows further structures beyond the on…
Generalized phase transitions in Lovelock gravity
Xian O. Camanho, Jose D. Edelstein, Gaston Giribet +1
We investigate a novel mechanism for phase transitions that is a distinctive feature of higher-curvature gravity theories. For definiteness, we bound ourselves to the case of Lovel…
Lovelock theory and the AdS/CFT correspondence
Xian O. Camanho, Jose D. Edelstein, Jose M. Sanchez de Santos
Lovelock theory is the natural extension of general relativity to higher dimensions. It can be also thought of as a toy model for ghost-free higher curvature corrections in gravita…
Cosmic censorship in Lovelock theory
Xian O. Camanho, Jose D. Edelstein
In analyzing maximally symmetric Lovelock black holes with non-planar horizon topologies, many novel features have been observed. The existence of finite radius singularities, a ma…
Phase transitions in general gravity theories
Xian O. Camanho
Phase transitions between two competing vacua of a given theory are quite common in physics. We discuss how to construct the space-time solutions that allow the description of phas…
Cavitation effects on the confinement/deconfinement transition
Alex Buchel, Xian O. Camanho, Jose D. Edelstein
Cavitation is a process where the viscous terms in a relativistic fluid result in reducing the effective pressure, thus facilitating the nucleation of bubbles of a stable phase. Th…
New type of phase transition in gravitational theories
Xian O. Camanho, Jose D. Edelstein, Gaston Giribet +1
We set forth a new type of phase transition that might take place in gravitational theories whenever higher-curvature corrections are considered. It can be regarded as a sophistica…
A Lovelock black hole bestiary
Xian O. Camanho, Jose D. Edelstein
We revisit the study of (A)dS black holes in Lovelock theories. We present a new tool that allows to attack this problem in full generality. In analyzing maximally symmetric Lovelo…
Lovelock theories, holography and the fate of the viscosity bound
Xian O. Camanho, Jose D. Edelstein, Miguel F. Paulos
We consider Lovelock theories of gravity in the context of AdS/CFT. We show that, for these theories, causality violation on a black hole background can occur well in the interior…
Causality in AdS/CFT and Lovelock theory
Xian O. Camanho, Jose D. Edelstein
We explore the constraints imposed on higher curvature corrections of the Lovelock type due to causality restrictions in the boundary of asymptotically AdS space-time. In the frame…
Causality constraints in AdS/CFT from conformal collider physics and Gauss-Bonnet gravity
Xian O. Camanho, Jose D. Edelstein
We explore the relation between positivity of the energy constraints in conformal field theories and causality in their dual gravity description. Our discussion involves CFTs with…