190 citations · 1.2k across the 23 of their papers we have counts for
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Quantum Numbers for Excitations of Bose-Einstein Condensates in 1D Optical Lattices
Tomoya Isoshima, Martti M. Salomaa
The excitation spectrum and the band structure of a Bose-Einstein condensate in a periodic potential are investigated. Analyses within full 3D systems, finite 1D systems, and ideal…
Precessional motion of a vortex in a finite-temperature Bose-Einstein condensate
Tomoya Isoshima, Jukka Huhtamäki, Martti M. Salomaa
We study the precessing motion of a vortex in a Bose-Einstein condensate of atomic gases. In addition to the former zero-temperature studies, finite temperature systems are treated…
Collective Oscillations of Vortex Lattices in Rotating Bose-Einstein Condensates
T. Mizushima, Y. Kawaguchi, K. Machida +3
The complete low-energy collective-excitation spectrum of vortex lattices is discussed for rotating Bose-Einstein condensates (BEC) by solving the Bogoliubov-de Gennes (BdG) equati…
Splitting of a doubly quantized vortex through intertwining in Bose-Einstein condensates
M. Mottonen, T. Mizushima, T. Isoshima +2
The stability of doubly quantized vortices in dilute Bose-Einstein condensates of 23Na is examined at zero temperature. The eigenmode spectrum of the Bogoliubov equations for a har…
Instabilities of off-centered vortices in a Bose-Einstein condensate
Tomoya Isoshima, Jukka Huhtamäki, Martti M. Salomaa
We study numerically the excitations of off-centered vortices in a Bose-Einstein condensate. The displacement of a single vortex and the separation of a doubly quantized vortex are…
Axisymmetric Vortices in Spinor Bose-Einstein Condensates under Rotation
Tomoya Isoshima, Kazushige Machida
The relative stability of various axisymmetric vortices in a spinor Bose-Einstein condensate with F=1 is examined within extended Bogoliubov theory. This yields the phase diagram i…