title: Excitation spectroscopy of vortex lattices in a rotating Bose-Einstein condensate.
abstract: Excitation spectroscopy of vortex lattices in rotating Bose-Einstein condensates is described. We numerically obtain the Bogoliubov-de Gennes quasiparticle excitations for a broad range of energies and analyze them in the context of the complex dynamics of the system. Our work is carried out in a regime in which standard hydrodynamic assumptions do not hold, and includes features not readily contained within existing treatments.
authors.affiliation: Department of Physics and Astronomy, and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14627, USA.
authors.forename: S J
authors.initials: SJ
authors.lastname: Woo
authors.forename: L O
authors.initials: LO
authors.lastname: Baksmaty
authors.forename: S
authors.initials: S
authors.lastname: Choi
authors.forename: N P
authors.initials: NP
authors.lastname: Bigelow