Learn More
Predicting atomistic properties of a dislocation is a first step toward an understanding of plastic behavior of materials, in particular BCC metals. The core structure and Peierls stress of a screw dislocation in BCC iron have been determined using the first-principles calculations based on the density functional theory with the large-scale supercell(More)
Due to various technological and medical demands, several methods for controlling the dynamical behavior of coupled oscillators have been developed. In the present study, we develop a method to control the individual phase relationship between coupled oscillators, in which multilinear feedback is used to modify the interaction between the oscillators. By(More)
In order to study quantum many-body problems, we develop two matrix diagonalization codes, which solve only the ground state and all quantum states, respectively. The target model in both codes is the Hubbard model with confinement potential which describes an atomic Fermi gas loaded on an optical lattice and partly High-Tc cuprate superconductor. For the(More)
Predicting atomistic properties of a dislocation is a first step toward an understanding of plastic behavior of materials, in particular BCC metals. The core structure and Peierls stress of a screw dislocation in BCC metals have been studied over the years using the first-principles and empirical methods, however, their conclusions vary due to the(More)
The Earth Simulator has the highest power ever achieved to perform molecular dynamics simulation of large-scale supra-biomolecular systems. Now, we are developing a molecular dynamics simulation system, called PABIOS, which is designed to run a system composed of more than a million particles efficiently on parallel computers. To perform large-scale(More)
The density oscillator is a simple system that exhibits self-sustained oscillation. It alternately exhibits up and down flow through a pipe which connects two containers filled with fluids of different densities. However, the mechanism of the flow reversal has not yet been fully understood. From the detailed measurements, we have found that flow reversal(More)
The Earth Simulator has the highest power ever achieved to perform molecular dynamics simulation of large-scale supra-molecular systems. Now, we are developing a molecular dynamics simulation system, called PABIOS, which is designed to run a system composed of more than a million particles efficiently on parallel computers. To perform large-scale(More)