Researchers find way to improve simulations of neutrinos and astrophysical plasma dynamics
November 13, 2017
Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU)
A research team including Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU) Principal Investigator Naoki Yoshida have found a way to improve computer simulations that recreate the movement of neutrinos and astrophysical plasma.
The Vlasov–Poisson equation has played a significant role in simulating how particles move in the Universe, but it also uses a large amount of memory space in computer simulations. Hence, it had been assumed that using Vlasov–Poisson equation in 3D simulations was impossible.
A study lead by the Satoshi Tanaka and Kohji Yoshikawa at the Center for Computational Sciences at the University of Tsukuba, and including Takashi Minoshima at the Japan Agency for Marine-Earth Science and Technology and Kavli IPMU’s Yoshida, managed to develop a solution that allows Vlasov–Poisson equations to be used in computer simulations using a fraction of the usual memory space.
Details of their findings were published in the November 10 issue of the Astrophysical Journal.
Journal: Astrophysical Journal
Title: Multidimensional Vlasov–Poisson Simulations with High-order Monotonicity- and Positivity-preserving Schemes
Authors: Satoshi Tanaka (1), Kohji Yoshikawa (1), Takashi Minoshima (2), Naoki Yoshida (3,4)
1. Center for Computational Sciences, University of Tsukuba
2. Department of Mathematical Science and Advanced Technology, Japan Agency for Marine-Earth Science and Technology
3. Department of Physics, The University of Tokyo
4 Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo
Paper abstract (Astrophysical Journal)