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The few-body problem for trapped bosons with large scattering length
S. Jonsell, H. Heiselberg, C. J. Pethick
We calculate energy levels of two and three bosons trapped in a harmonic oscillator potential with oscillator length . The atoms are assumed to interact through a…
Loop structure of the lowest Bloch band for a Bose-Einstein condensate
Dmitri Diakonov, L. M. Jensen, C. J. Pethick +1
We investigate analytically and numerically Bloch waves for a Bose--Einstein condensate in a sinusoidal external potential. At low densities the dependence of the energy on the qua…
Cold Bose gases with large scattering lengths
S. Cowell, H. Heiselberg, I. E. Mazets +3
We calculate the energy and condensate fraction for a dense system of bosons interacting through an attractive short range interaction with positive s-wave scattering length . A…
Influence of Induced Interactions on the Superfluid Transition in Dilute Fermi Gases
H. Heiselberg, C. J. Pethick, H. Smith +1
We calculate the effects of induced interactions on the transition temperature to the BCS state in dilute Fermi gases. For a pure Fermi system with 2 species having equal densities…
Weakly-interacting Bose-Einstein condensates under rotation
G. M. Kavoulakis, B. Mottelson, C. J. Pethick
We investigate the ground and low excited states of a rotating, weakly interacting Bose-Einstein condensed gas in a harmonic trap for a given angular momentum. Analytical results i…
On the criterion for Bose-Einstein condensation for particles in traps
C. J. Pethick, L. P. Pitaevskii
We consider the criterion for Bose condensation for particles in a harmonic trap. For a fixed angular momentum, the lowest energy state for a cloud of bosons with attractive intera…