106 citations · 417 across the 24 of their papers we have counts for
8 papers · 1 filter
Analog Hawking radiation from a spin-sonic horizon in a two-component Bose-Einstein condensate
Anna Berti, Lennart Fernandes, Salvatore Giulio Butera +3
We theoretically study stimulated and spontaneous Hawking emission from an analog horizon for spin modes in a two-component Bose-Einstein condensate, both with and without a cohere…
Particle creation in the spin modes of a dynamically oscillating two-component Bose-Einstein condensate
Salvatore Butera, Iacopo Carusotto
We investigate the parametric amplification of the zero-point fluctuations in the spin modes of a two-component Bose-Einstein condensate, triggered by the dynamical evolution of th…
Position- and momentum-space two-body correlations in a weakly interacting trapped condensate
Salvatore Butera, David Clément, Iacopo Carusotto
We investigate the position- and momentum-space two--body correlations in a weakly interacting, harmonically trapped atomic Bose-Einstein condensed gas at low temperatures. The two…
Hanbury-Brown and Twiss bunching of phonons and of the quantum depletion in a strongly-interacting Bose gas
Hugo Cayla, Salvatore Butera, Cécile Carcy +6
We report the realisation of a Hanbury-Brown and Twiss (HBT)-like experiment with a gas of strongly interacting bosons at low temperatures. The regime of large interactions and low…
Black-hole lasing in coherently coupled two-component atomic condensates
Salvatore Butera, Patrik Öhberg, Iacopo Carusotto
We theoretically study the black-hole lasing phenomenon in a flowing one-dimensional, coherently coupled two component atomic Bose-Einstein condensate whose constituent atoms inter…
Nonlinear synthetic gauge potentials and sonic horizons in Bose-Einstein condensates
Salvatore Butera, Niclas Westerberg, Daniele Faccio +1
Phonons in a Bose-Einstein condensate can be made to behave as if they propagate in curved spacetime by controlling the condensate flow speed. Seemingly disconnected to this, artif…
Vortex dynamics in superfluids governed by an interacting gauge theory
Salvatore Butera, Manuel Valiente, Patrik Öhberg
We study the dynamics of a vortex in a quasi two-dimensional Bose gas consisting of light matter coupled atoms forming two-component pseudo spins. The gas is subject to a density d…
Quantized vortices in interacting gauge theories
Salvatore Butera, Manuel Valiente, Patrik Öhberg
We consider a two-dimensional weakly interacting ultracold Bose gas whose constituents are two-level atoms. We study the effects of a synthetic density-dependent gauge field that a…