title: Observations on sound propagation in rapidly rotating Bose-Einstein condensates.
abstract: Repulsive laser potential pulses applied to vortex lattices of rapidly rotating Bose-Einstein condensates create propagating density waves which we have observed experimentally and modeled computationally to high accuracy. We have observed a rich variety of dynamical phenomena ranging from interference effects and shock-wave formation to anisotropic sound propagation.
authors.affiliation: Department of Physics, University of Otago, Dunedin, New Zealand.
authors.forename: T P
authors.initials: TP
authors.lastname: Simula
authors.forename: P
authors.initials: P
authors.lastname: Engels
authors.forename: I
authors.initials: I
authors.lastname: Coddington
authors.forename: V
authors.initials: V
authors.lastname: Schweikhard
authors.forename: E A
authors.initials: EA
authors.lastname: Cornell
authors.forename: R J
authors.initials: RJ
authors.lastname: Ballagh