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18 papers · 1 filter
Interacting fermions in quasi-one-dimensional harmonic traps
G. E. Astrakharchik, D. Blume, S. Giorgini +1
Quasi-one-dimensional (quasi-1d) two-component Fermi gases with effectively attractive and repulsive interactions are characterized for arbitrary interaction strength. The ground-s…
Quantum Monte Carlo study of quasi-one-dimensional Bose gases
G. E. Astrakharchik, D. Blume, S. Giorgini +1
We study the behavior of quasi-one-dimensional (quasi-1d) Bose gases by Monte Carlo techniques, i.e., by the variational Monte Carlo, the diffusion Monte Carlo, and the fixed-node…
Expansion of Bose-Einstein condensates in lower dimensions
A. M. Kamchatnov
In the hydrodynamic approximation we obtain analytic solutions to the Gross-Pitaevskii equation with positive scattering length which describe expansions of the Bose-Einstein conde…
Dissipationless shock waves in repulsive Bose-Einstein condensates
A. M. Kamchatnov, A. Gammal, R. A. Kraenkel
We consider formation of dissipationless shock waves in Bose-Einstein condensates with repulsive interaction between atoms. It is shown that big enough initial inhomogeneity of den…
Formation of soliton trains in Bose-Einstein condensates as a nonlinear Fresnel diffraction of matter waves
A. M. Kamchatnov, A. Gammal, F. Kh. Abdullaev +1
The problem of generation of atomic soliton trains in elongated Bose-Einstein condensates is considered in framework of Whitham theory of modulations of nonlinear waves. Complete a…
Mixed-isotope Bose-Einstein condensates in Rubidium
Valery S. Shchesnovich, Anatoly M. Kamchatnov, Roberto A. Kraenkel
We consider the ground state properties of mixed Bose-Einstein condensates of 87Rb and 85Rb atoms in the isotropic pancake trap, for both signs of the interspecies scattering lengt…