6 papers
Collective modes and the effect of single-particle excitations in the BCS-BEC crossover region of a trapped Fermi superfluid
Yoji Ohashi, Allan Griffin
We investigate the collective oscillations in the BCS-BEC crossover region of a trapped Fermi superfluid at T=0. We explicitly include the effect of a Feshbach resonance, which lea…
Two-Fluid Hydrodynamics in Trapped Bose Gases and in Superfluid Helium
Allan Griffin, Tetsuro Nikuni
A review is given of recent theoretical work on the superfluid dynamics of trapped Bose gases at finite temperatures, where there is a significant fraction of non-condensate atoms.…
BEC and the New World of Coherent Matter Waves
Allan Griffin
This paper is based on three tutorial lectures given at the CRM Summer School in Banff, Alberta, June 27-July 10, 1999 on "Theoretical Physics at the End of the Twentieth Century".…
Dynamics of trapped Bose gases at finite temperatures
E. Zaremba, T. Nikuni, A. Griffin
Starting from an approximate microscopic model of a trapped Bose-condensed gas at finite temperatures, we derive an equation of motion for the condensate wavefunction and a quantum…
A Brief History of Our Understanding of BEC: From Bose to Beliaev
Allan Griffin
We review how our current ideas about BEC developed in the early period 1925-1965, which had the specific goal of understanding superfluid He. This history is presented by comm…
Hydrodynamic damping in trapped Bose gases
T. Nikuni, A. Griffin
Griffin, Wu and Stringari have derived the hydrodynamic equations of a trapped dilute Bose gas above the Bose-Einstein transition temperature. We give the extension which includes…