Zobrazeno 1 - 10
of 2 329
pro vyhledávání: '"TAKAHASHI, TORU"'
We study the color correlation between static quark and antiquark ($q\bar q$) that is accompanied by gluonic excitations in the confined phase at $T=0$ by constructing reduced density matrices $\rho$ in color space. We perform quenched lattice QCD ca
Externí odkaz:
http://arxiv.org/abs/2411.13833
Autor:
Takahashi, Toru
This study proposes a versatile and efficient optimisation method for discrete coils that induce a magnetic field by their steady currents. The prime target is gradient coils for MRI (Magnetic Resonance Imaging). The derivative (gradient) of the $z$-
Externí odkaz:
http://arxiv.org/abs/2404.00967
A fast time-domain boundary element method for three-dimensional electromagnetic scattering problems
Autor:
Takahashi, Toru
This paper proposes a fast time-domain boundary element method (TDBEM) to solve three-dimensional transient electromagnetic scattering problems regarding perfectly electric conductors in the classical marching-on-in-time manner. The algorithm of the
Externí odkaz:
http://arxiv.org/abs/2303.05006
Publikováno v:
In Journal of Computational Physics 1 January 2025 520
We investigate the possible thermalization process of the highly occupied and weakly coupled Yang-Mills fields expanding along the beam axis through an evaluation of the entropy, particle number, and pressure anisotropy. The time evolution of the sys
Externí odkaz:
http://arxiv.org/abs/2203.02859
Publikováno v:
Wave Motion 113C (2022) 102987
This study presents a topology optimization scheme for realizing a bound state in the continuum along an open acoustic waveguide comprising a periodic array of elastic materials. First, we formulate the periodic problem as a system of linear algebrai
Externí odkaz:
http://arxiv.org/abs/2201.09533
Autor:
Hirayama, Kento1,2 (AUTHOR), Takahashi, Toru1 (AUTHOR), Yan, Xiang3 (AUTHOR), Koga, Takayuki3 (AUTHOR), Osu, Rieko1 (AUTHOR) r.osu@waseda.jp
Publikováno v:
Scientific Reports. 9/30/2024, Vol. 14 Issue 1, p1-11. 11p.
Our objective is to stabilise and accelerate the time-domain boundary element method (TDBEM) for the three-dimensional wave equation. To overcome the potential time instability, we considered using the Burton--Miller-type boundary integral equation (
Externí odkaz:
http://arxiv.org/abs/2111.05205
Publikováno v:
In Computers and Structures 15 August 2024 300