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5 papers · 2 filters
The decay and collisions of dark solitons in superfluid Fermi gases
R. G. Scott, F. Dalfovo, L. P. Pitaevskii +4
We study soliton collisions and the decay of solitons into sound in superfluid Fermi gases across the Bose-Einstein condensate to Bardeen-Cooper-Schrieffer (BEC-BCS) crossover by p…
Isolated quantum heat engine
O. Fialko, D. Hallwood
We present a theoretical and numerical analysis of a quantum system that is capable of functioning as a heat engine. This system could be realized experimentally using cold bosonic…
Theory of superfluidity and drag force in the one-dimensional Bose gas
Alexander Yu. Cherny, Jean-Sebastien Caux, Joachim Brand
The one-dimensional Bose gas is an unusual superfluid. In contrast to higher spatial dimensions, the existence of non-classical rotational inertia is not directly linked to the dis…
Quantum tunneling of a vortex between two pinning potentials
O. Fialko, A. S. Bradley, J. Brand
A vortex can tunnel between two pinning potentials in an atomic Bose-Einstein condensate on a time scale of the order of 1s under typical experimental conditions. This makes it pos…
Simulating strongly correlated multiparticle systems in a truncated Hilbert space
Thomas Ernst, David W. Hallwood, Jake Gulliksen +2
Representing a strongly interacting multi-particle wave function in a finite product basis leads to errors. Simple rescaling of the contact interaction can preserve the low-lying e…