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9 papers · 1 filter
A conservative semi-Lagrangian method for oscillation-free computation of advection processes
Masato Ida
The semi-Lagrangian method using the hybrid-cubic-rational interpolation function [M. Ida, Comput. Fluid Dyn. J. 10 (2001) 159] is modified to a conservative method by incorporatin…
A characteristic frequency of two mutually interacting gas bubbles in an acoustic field
Masato Ida
Transition frequencies of two spherical gas bubbles interacting in an acoustic field are discussed theoretically. In the present study, transition frequency is defined as the frequ…
Number of Transition Frequencies of a System Containing an Arbitrary Number of Gas Bubbles
Masato Ida
``Transition frequencies'' of a system containing an arbitrary number of bubbles levitated in a liquid are discussed. Using a linear coupled-oscillator model, it is shown theoretic…
Resonant X-Ray Scattering from the Quadrupolar Ordering Phase of CeB_6
Tatsuya Nagao, Jun-ichi Igarashi
We theoretically investigate the origin of the resonant x-ray scattering (RXS) signal near the Ce absorption edge in the quadrupolar ordering phase of CeB, considerin…
Hybrid-Cubic-Rational Semi-Lagrangian Method with the Optimal Mixing
Masato Ida
A semi-Lagrangian method for advection equation with hybrid cubic-rational interpolation is introduced. In the present method, the spatial profile of physical quantities is interpo…
Universal relation between the dispersion curve and the ground-state correlation length in 1D antiferromagnetic quantum spin systems
K. Okunishi, Y. Akutsu, N. Akutsu +1
We discuss an universal relation with in 1D quantum spin systems with an excitation gap, where is the dispersion curve of the low-energy excitatio…