6 papers
Irreversible dynamics of vortex reconnections in quantum fluids
Alberto Villois, Davide Proment, Giorgio Krstulovic
We statistically study vortex reconnections in quantum fluids by evolving different realizations of vortex Hopf links using the Gross--Pitaevskii model. Despite the time-reversibil…
A matching theory to characterize sound emission during vortex reconnection in quantum fluids
Davide Proment, Giorgio Krstulovic
In a concurrent work, Villois et al. 2020 reported the evidence that vortex reconnections in quantum fluids follow an irreversible dynamics, namely vortices separate faster than th…
Breaking of Josephson junction oscillations and onset of quantum turbulence in Bose--Einstein condensates
Adam Griffin, Sergey Nazarenko, Davide Proment
We analyse the formation and the dynamics of quantum turbulence in a two-dimensional Bose-Einstein condensate with a Josephson junction barrier modelled using the Gross-Pitaevskii…
Flying in a superfluid: starting flow past an airfoil
Seth Musser, Davide Proment, Miguel Onorato +1
We investigate superfluid flow around an airfoil accelerated to a finite velocity from rest. Using simulations of the Gross--Pitaevskii equation we find striking similarities to vi…
Clustering and phase transitions in a 2D superfluid with immiscible active impurities
Umberto Giuriato, Giorgio Krstulovic, Davide Proment
Phase transitions of a finite-size two-dimensional quantum fluid of bosons in presence of impurities are studied by using the truncated Gross-Pitaevskii model. Impurities are descr…
Evolution of a superfluid vortex filament tangle driven by the Gross-Pitaevskii equation
Alberto Villois, Davide Proment, Giorgio Krstulovic
The development and decay of a turbulent vortex tangle driven by the Gross-Pitaevskii equation is studied. Using a recently-developed accurate and robust tracking algorithm, all qu…