Zero-energy states in rotating trapped Bose-Einstein condensates

Abstract

We have calculated low-lying quasiparticle excitation spectra of rotating three-dimensional Bose-Einstein condensates. As opposed to the prediction of hydrodynamic continuum theories, we find a minimum in the Tkachenko mode spectrum at intermediate rotation frequencies of the harmonic trap. Such a minimum can harbour a Tkachenko quasiparticle with zero excitation energy. We discuss the experimental signatures of such a zero mode.

14 pages, 6 figures

References in corpus (8)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Non-Abelian Anyons and Topological Quantum Computation
• Signatures of Majorana fermions in hybrid superconductor-semiconductor nanowire devices
• Dynamics of Few Co-rotating Vortices in Bose-Einstein Condensates
• Angular momentum exchange between coherent light and matter fields
• Vortex waves in trapped Bose-Einstein condensates
• Collective dynamics of vortices in trapped Bose-Einstein condensates

Cited by in corpus (4)

• Vortex gyroscope imaging of planar superfluids
• Hamiltonian dynamics of two same-sign point vortices
• Two Nambu-Goldstone zero modes for rotating Bose-Einstein condensates
• Excitation spectrum of vortex-lattice modes in a rotating condensate with a density-dependent gauge potential