85 citations · 89 across the 6 of their papers we have counts for
3 papers · 1 filter
Roundoff error analysis of the double exponential formula-based method for the matrix sign function
Tomoya Miyashita, Shuhei Kudo, Yusaku Yamamoto
In this paper, we perform a roundoff error analysis of an integration-based method for computing the matrix sign function recently proposed by Nakaya and Tanaka. The method express…
A fast and accurate computation method for reflective diffraction simulations
Shuhei Kudo, Yusaku Yamamoto, Takeo Hoshi
We present a new computation method for simulating reflection high-energy electron diffraction and the total-reflection high-energy positron diffraction experiments. The two experi…
A Parallelizable Energy-Preserving Integrator MB4 and Its Application to Quantum-Mechanical Wavepacket Dynamics
Tsubasa Sakai, Shuhei Kudo, Hiroto Imachi +3
In simulating physical systems, conservation of the total energy is often essential, especially when energy conversion between different forms of energy occurs frequently. Recently…