89 citations · 278 across the 6 of their papers we have counts for
6 papers
Spatial period-doubling in Bose-Einstein condensates in an optical lattice
M. Machholm, A. Nicolin, C. J. Pethick +1
We demonstrate that there exist stationary states of Bose-Einstein condensates in an optical lattice that do not satisfy the usual Bloch periodicity condition. Using the discrete m…
Collisional relaxation in diffuse clouds of trapped bosons
G. M. Kavoulakis, C. J. Pethick, H. Smith
The damping of collective modes and the relaxation of temperature anisotropies in a trapped Bose gas is determined at temperatures above the Bose-Einstein condensation temperature…
Kinetic Theory of Collective Modes in Atomic Clouds above the Bose-Einstein Transition Temperature
U. Al Khawaja, C. J. Pethick, H. Smith
We calculate frequencies and damping rates of the lowest collective modes of a dilute Bose gas confined in an anisotropic trapping potential above the Bose-Einstein transition temp…
The Surface of a Bose-Einstein Condensed Atomic Cloud
U. Al Khawaja, C. J. Pethick, H. Smith
We investigate the structure and collective modes of a planar surface of a trapped Bose-Einstein condensed gas at zero temperature. In the long-wavelength limit we find a mode simi…
Vortices in Bose-Einstein-Condensed Atomic Clouds
Emil Lundh, C. J. Pethick, H. Smith
The properties of vortex states in a Bose-Einstein condensed cloud of atoms are considered at zero temperature. Using both analytical and numerical methods we solve the time-depend…
Damping of Hydrodynamic Modes in a Trapped Bose Gas above the Bose-Einstein Transition Temperature
G. M. Kavoulakis, C. J. Pethick, H. Smith
We calculate the damping of low-lying collective modes of a trapped Bose gas in the hydrodynamic regime, and show that this comes solely from the shear viscosity, since the contrib…