152 citations · 261 across the 5 of their papers we have counts for
9 papers
Instability of the superfluid flow as black-hole lasing effect
S. Finazzi, F. Piazza, M. Abad +2
We show that the instability leading to the decay of the one-dimensional superfluid flow through a penetrable barrier are due to the black-hole lasing effect. This dynamical instab…
Phase-slips and vortex dynamics in Josephson oscillations between Bose-Einstein condensates
Marta Abad, Muntsa Guilleumas, Ricardo Mayol +3
We study the relation between Josephson dynamics and topological excitations in a dilute Bose-Einstein condensate confined in a double-well trap. We show that the phase slips respo…
A Multi-path Interferometer with Ultracold Atoms Trapped in an Optical Lattice
J. Chwedenczuk, F. Piazza, A. Smerzi
We study an ultra-cold gas of bosons trapped in a one dimensional -site optical lattice perturbed by a spatially dependent potential , where the unknown coupling…
Critical velocity for a toroidal Bose-Einstein condensate flowing through a barrier
Francesco Piazza, Lee A. Collins, Augusto Smerzi
We consider the setup employed in a recent experiment (Ramanathan et al 2011 Phys. Rev. Lett. 106 130401) devoted to the study of the instability of the superfluid flow of a toroid…
Phase Estimation from Atom Position Measurements
Jan Chwedenczuk, Francesco Piazza, Augusto Smerzi
We study the measurement of the position of atoms as a means to estimate the relative phase between two Bose-Einstein condensates. First, we consider atoms released from a doub…
Instability and Vortex Rings Dynamics in a Three-Dimensional Superfluid Flow Through a Constriction
F. Piazza, L. A. Collins, A. Smerzi
We study the instability of a superfluid flow through a constriction in three spatial dimensions. We consider a Bose-Einstein condensate at zero temperature in two different geomet…