190 citations · 1.2k across the 23 of their papers we have counts for
23 papers
Stability and dynamics of vortex clusters in nonrotated Bose-Einstein condensates
V. Pietila, M. Mottonen, T. Isoshima +2
We study stationary clusters of vortices and antivortices in dilute pancake-shaped Bose-Einstein condensates confined in nonrotating harmonic traps. Previous theoretical results on…
Effect of Quadratic Zeeman Energy on the Vortex of Spinor Bose-Einstein Condensates
Tomoya Isoshima, Sungkit Yip
The spinor Bose-Einstein condensate of atomic gases has been experimentally realized by a number of groups. Further, theoretical proposals of the possible vortex states have been s…
Splitting times of doubly quantized vortices in dilute Bose-Einstein condensates
J. A. M. Huhtamäki, M. Möttönen, T. Isoshima +2
Recently, the splitting of a topologically created doubly quantized vortex into two singly quantized vortices was experimentally investigated in dilute atomic cigar-shaped Bose-Ein…
Vortex oscillations in confined Bose-Einstein condensate interacting with 1D optical lattice
Tomoya Isoshima
We study Bose-Einstein condensate of atomic Boson gases trapped in a composite potential of a harmonic potential and an optical lattice potential. We found a series of collective e…
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…