83 citations · 480 across the 24 of their papers we have counts for
6 papers · 1 filter
Impurity crystal in a Bose-Einstein condensate
David C. Roberts, Sergio Rica
We investigate the behavior of impurity fields immersed in a larger condensate field in 1, 2, and 3 dimensions. We discuss the localization of a single impurity field within a cond…
A linear path toward synchronization: Anomalous scaling in a new class of exactly solvable Kuramoto models
David C. Roberts, Razvan Teodorescu
Using a recently introduced linear reformulation of the Kuramoto model of self-synchronizing oscillator systems (arXiv:0704.1166), we study a new class of analytically solvable osc…
On the Hydrodynamic Boundary Condition for Superfluid Flow
Yves Pomeau, David C. Roberts
We discuss the hydrodynamic boundary condition for a superfluid moving tangentially to a rough surface. Specifically, we argue that the scattering of quantum fluctuations off surfa…
Force on a moving point impurity due to quantum fluctuations in a Bose-Einstein condensate
D. C. Roberts
An analytic expression is derived for a force on a weak point impurity arising from the scattering of quantum fluctuations in a slow-moving, weakly interacting, three-dimensional B…
Probing temperature and damping rates in Bose-Einstein condensates using ultraslow light experiments
D. C. Roberts
We propose a method to probe Landau and Beliaev processes in dilute trapped atomic condensates with a multiple state structure using ultraslow light experimental configurations. Un…
Casimir Friction II: Casimir effect and drag in zero temperature superfluids
D. C. Roberts, Y. Pomeau
We discuss a force arising from zero-temperature quantum fluctuations in a weakly interacting Bose-Einstein condensate (BEC). We argue that there is a drag force on an object movin…