17 citations · 27 across the 6 of their papers we have counts for
6 papers
Interference Pattern Formation between Bounded-Solitons and Radiation in Momentum Space: Possible Detection of Radiation from Bounded-Solitons with Bose-Einstein Condensate of Neutral Atoms
Hironobu Fujishima, Masahiko Okumura, Makoto Mine +1
We propose an indirect method to observe radiation from an incomplete soliton with sufficiently large amplitude. We show that the radiation causes a notched structure on the envelo…
Decay of Resonance Structure and Trapping Effect in Potential Scattering Problem of Self-Focusing Wave Packet
Hironobu Fujishima, Makoto Mine, Masahiko Okumura +1
Potential scattering problems governed by the time-dependent Gross-Pitaevskii equation are investigated numerically for various values of coupling constants. The initial condition…
Extended Thermodynamic Relation and Fluctuation Theorem in Stochastic Dynamics with Time Reversed Process
T. Koide, M. Mine, M. Okumura +1
We consider a stochastic model described by two stochastic differential equations of motion; one is for the stochastic evolution forward in time and the other for backward in time.…
Quantum Field Theoretical Description of Unstable Behavior of Trapped Bose-Einstein Condensates with Complex Eigenvalues of Bogoliubov-de Gennes Equations
M. Mine, M. Okumura, T. Sunaga +1
The Bogoliubov-de Gennes equations are used for a number of theoretical works on the trapped Bose-Einstein condensates. These equations are known to give the energies of the quasi-…
Condition for the Existence of Complex Modes in a Trapped Bose--Einstein Condensate with a Highly Quantized Vortex
Eriko Fukuyama, Makoto MIne, Masahiko Okumura +2
We consider a trapped Bose--Einstein condensate (BEC) with a highly quantized vortex. For the BEC with a doubly, triply or quadruply quantized vortex, the numerical calculations ha…
Effect of the Zero-Mode on the Response of a Trapped Bose-Condensed Gas
Makoto Mine, Tomoi Koide, Masahiko Okumura +1
The dynamical response of a trapped Bose-Einstein condensate (BEC) is formulated consistently with quantum field theory and is numerically evaluated. We regard the BEC as a manifes…