14 citations · 57 across the 15 of their papers we have counts for
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End state of the experimental black-hole bomb
Patrik Švančara, Leonardo Solidoro, Pietro Smaniotto +10
Rotating black holes can amplify incident waves through superradiant scattering. When these waves are confined, repeated amplification gives rise to the black-hole bomb instability…
Tracking the nonlinear formation of an interfacial wave spectral cascade from one to few to many
Sean M. D. Gregory, Silvia Schiattarella, Vitor S. Barroso +3
A hallmark of far-from-equilibrium systems is the emergence of a spectral cascade, where energy is transferred across length-scales following a simple power law. The universal natu…
Non-linear effective field theory simulators in two-fluid interfaces
Vitor S. Barroso, Cameron R. D. Bunney, Silke Weinfurtner
Analogue gravity offers an approach for testing the universality and robustness of quantum field theories in curved spacetimes and validating them using down-to-earth, laboratory-b…
Third sound detectors in accelerated motion
Cameron R. D. Bunney, Vitor S. Barroso, Steffen Biermann +6
An accelerated observer moving through empty space sees particles appearing and disappearing, while an observer with a constant velocity does not register any particles. This pheno…
Primary thermalisation mechanism of Early Universe observed from Faraday-wave scattering on liquid-liquid interfaces
Vitor S. Barroso, August Geelmuyden, Zack Fifer +4
For the past two hundred years, parametric instabilities have been studied in various physical systems, such as fluids, mechanical devices and even inflationary cosmology. It was n…
Particle Production Between Isometric Frames on a Poincaré Patch of
J. P. M. Pitelli, Vitor S. Barroso
In a recent paper [J. P. M. Pitelli, Phys. Rev. D {\bf 99}, 108701 (2019)], one of us showed that the vacuum state associated to conformal fields on a Poicaré patch of anti-de Sitt…
Boundary Conditions and Vacuum Fluctuations in
Vitor S. Barroso, J. P. M. Pitelli
Initial conditions given on a spacelike, static slice of a non-globally hyperbolic spacetime may not define the fates of classical and quantum fields uniquely. Such lack of global…
Boundary conditions and renormalized stress-energy tensor on a Poincaré patch of
João Paulo M. Pitelli, Vitor S. Barroso, Ricardo A. Mosna
Quantum field theory on anti-de Sitter spacetime requires the introduction of boundary conditions at its conformal boundary, due essentially to the absence of global hyperbolicity.…
Vacuum Fluctuations and Boundary Conditions in a Global Monopole
V. S. Barroso, J. P. M. Pitelli
We study the vacuum fluctuations of a massless scalar field on the background of a global monopole. Due to the nontrivial topology of the global monopole spacetime, charact…
Scattering Cross Section and Stability of Global Monopoles
J. P. M. Pitelli, V. S. Barroso, Maurício Richartz
We study the scattering of scalar waves propagating on the global monopole background. Since the scalar wave operator in this topological defect is not essentially self-adjoint, it…
Quantum Scattering on a Cone revisited
V. S. Barroso, J. P. M. Pitelli
We revisit the scattering of quantum test particles on the conical -dimensional spacetime and find the scatteting amplitude as a function of the boundary conditions imposed…