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8 papers · 2 filters
Three-Body Interacting Bosons in Free Space
D. S. Petrov
We propose a method of controlling two- and three-body interactions in an ultracold Bose gas in any dimension. The method requires us to have two coupled internal single-particle s…
Observation of a Strong Atom-Dimer Attraction in a Mass-Imbalanced Fermi-Fermi Mixture
Michael Jag, Matteo Zaccanti, Marko Cetina +5
We investigate a mixture of ultracold fermionic K atoms and weakly bound LiK dimers on the repulsive side of a heteronuclear atomic Feshbach resonance. By radio…
Nonlinear waves of polarization in two-component Bose-Einstein condensates
A. M. Kamchatnov, Y. V. Kartashov, P. -É. Larré +1
Waves with different symmetries exist in two-component Bose-Einstein condensates (BECs) whose dynamics is described by a system of coupled Gross-Pitaevskii (GP) equations. A first…
Zero sound in a two-dimensional dipolar Fermi gas
Zhen-Kai Lu, S. I. Matveenko, G. V. Shlyapnikov
We study zero sound in a weakly interacting 2D gas of single-component fermionic dipoles (polar molecules or atoms with a large magnetic moment) tilted with respect to the plane of…
Low-dimensional physics of ultracold gases with bound states and the sine-Gordon model
Thierry Jolicoeur, Evgeni Burovski, Giuliano Orso
One-dimensional systems of interacting atoms are an ideal laboratory to study the Kosterlitz-Thouless phase transition. In the renormalization group picture there is essentially a…
Quantum Flutter: Signatures and Robustness
Michael Knap, Charles J. M. Mathy, Martin Ganahl +2
We investigate the motion of an impurity particle injected with finite velocity into an interacting one-dimensional quantum gas. Using large-scale numerical simulations based on ma…