2.3k citations · 32.3k across the 282 of their papers we have counts for
42 papers · 1 filter
On energy extraction from Q-balls and other fundamental solitons
Vitor Cardoso, Rodrigo Vicente, Zhen Zhong
Energy exchange mechanisms have important applications in particle physics, gravity, fluid mechanics, and practically every field in physics. In this letter we show, both in freque…
Gravitational wave echoes from black hole area quantization
Vitor Cardoso, Valentino F. Foit, Matthew Kleban
Gravitational-wave astronomy has the potential to substantially advance our knowledge of the cosmos, from the most powerful astrophysical engines to the initial stages of our unive…
Mass Ladder Operators from Spacetime Conformal Symmetry
Vitor Cardoso, Tsuyoshi Houri, Masashi Kimura
Ladder operators can be useful constructs, allowing for unique insight and intuition. In fact, they have played a special role in the development of quantum mechanics and field the…
General first-order mass ladder operators for Klein-Gordon fields
Vitor Cardoso, Tsuyoshi Houri, Masashi Kimura
We study the ladder operator on scalar fields, mapping a solution of the Klein-Gordon equation onto another solution with a different mass, when the operator is at most first order…
Two worlds collide: Interacting shells in AdS spacetime and chaos
Richard Brito, Vitor Cardoso, Jorge V. Rocha
We study the simplest two-body problem in asymptotically anti-de Sitter spacetime: two, infinitely thin, concentric spherical shells of matter. We include only gravitational intera…
Superradiant instability of the Kerr brane
Akihiro Ishibashi, Paolo Pani, Leonardo Gualtieri +1
We consider linear gravitational perturbations of the Kerr brane, an exact solution of vacuum Einstein's equations in dimensions higher than four and a low-energy solution of strin…
The nonlinear dynamical stability of infrared modifications of gravity
Richard Brito, Alexandra Terrana, Matthew Johnson +1
Scalar forces "screened" by the Vainshtein mechanism may hold the key to understanding the cosmological expansion of our universe, while predicting new and exciting features in the…
Holographic thermalization, quasinormal modes and superradiance in Kerr-AdS
Vitor Cardoso, Oscar J. C. Dias, Gavin S. Hartnett +2
Black holes in anti-de Sitter (AdS) backgrounds play a pivotal role in the gauge/gravity duality where they determine, among other things, the approach to equilibrium of the dual f…
Holographic collisions in confining theories
Vitor Cardoso, Roberto Emparan, David Mateos +2
We study the gravitational dual of a high-energy collision in a confining gauge theory. We consider a linearized approach in which two point particles traveling in an AdS-soliton b…
NR/HEP: roadmap for the future
Vitor Cardoso, Leonardo Gualtieri, Carlos Herdeiro +29
Physics in curved spacetime describes a multitude of phenomena, ranging from astrophysics to high energy physics. The last few years have witnessed further progress on several fron…
Anti de Sitter black holes and branes in dynamical Chern-Simons gravity: perturbations, stability and the hydrodynamic modes
Terence Delsate, Vitor Cardoso, Paolo Pani
Dynamical Chern-Simons (DCS) theory is an extension of General Relativity in which the gravitational field is coupled to a scalar field through a parity violating term. We study pe…
Phase diagram for non-axisymmetric plasma balls
Vitor Cardoso, Oscar J. C. Dias, Jorge V. Rocha
Plasma balls and rings emerge as fluid holographic duals of black holes and black rings in the hydrodynamic/gravity correspondence for the Scherk-Schwarz AdS system. Recently, plas…
Quasinormal modes of black holes in anti-de Sitter space: a numerical study of the eikonal limit
Jaqueline Morgan, Vitor Cardoso, Alex S. Miranda +2
Using series solutions and time-domain evolutions, we probe the eikonal limit of the gravitational and scalar-field quasinormal modes of large black holes and black branes in anti-…
Bifurcation of Plasma Balls and Black Holes to Lobed Configurations
Vitor Cardoso, Oscar J. C. Dias
At high energy densities any quantum field theory is expected to have an effective hydrodynamic description. When combined with the gravity/gauge duality an unified picture emerges…
Geodesic stability, Lyapunov exponents and quasinormal modes
Vitor Cardoso, Alex S. Miranda, Emanuele Berti +2
Geodesic motion determines important features of spacetimes. Null unstable geodesics are closely related to the appearance of compact objects to external observers and have been as…
Gravitational radiation in d>4 from effective field theory
Vitor Cardoso, Oscar J. C. Dias, Pau Figueras
Some years ago, a new powerful technique, known as the Classical Effective Field Theory, was proposed to describe classical phenomena in gravitational systems. Here we show how thi…
Quasinormal modes and thermodynamic phase transitions
Emanuele Berti, Vitor Cardoso
It has recently been suggested that scalar, Dirac and Rarita-Schwinger perturbations are related to thermodynamic phase transitions of charged (Reissner-Nordström) black holes. In…
On the gravitational stability of D1-D5-P black holes
Vitor Cardoso, Oscar J. C. Dias, Robert C. Myers
We examine the stability of the nonextremal D1-D5-P black hole solutions. In particular, we look for the appearance of a superradiant instability for the spinning black holes but w…
The return of the membrane paradigm? Black holes and strings in the water tap
Vitor Cardoso, Oscar J. C. Dias, Leonardo Gualtieri
Several general arguments indicate that the event horizon behaves as a stretched membrane. We propose using this relation to understand gravity and dynamics of black objects in hig…
Gravitational Larmor formula in higher dimensions
Vitor Cardoso, Marco Cavaglia, Jun-Qi Guo
The Larmor formula for scalar and gravitational radiation from a pointlike particle is derived in any even higher-dimensional flat spacetime. General expressions for the field in t…
Equilibrium configurations of fluids and their stability in higher dimensions
Vitor Cardoso, Leonardo Gualtieri
We study equilibrium shapes, stability and possible bifurcation diagrams of fluids in higher dimensions, held together by either surface tension or self-gravity. We consider the eq…
Gravitational diffraction radiation
Vitor Cardoso, Marco Cavaglia, Mario Pimenta
We show that if the visible universe is a membrane embedded in a higher-dimensional space, particles in uniform motion radiate gravitational waves because of spacetime lumpiness. T…
Classical instability of Kerr-AdS black holes and the issue of final state
Vitor Cardoso, Oscar J. C. Dias, Shijun Yoshida
It is now established that small Kerr-Anti-de Sitter (Kerr-AdS) black holes are unstable against scalar perturbations, via superradiant amplification mechanism. We show that small…
Rayleigh-Plateau and Gregory-Laflamme instabilities of black strings
Vitor Cardoso, Oscar J. C. Dias
Many and very general arguments indicate that the event horizon behaves as a stretched membrane. We explore this analogy by associating the Gregory-Laflamme instability of black st…