[JRG Seminar] Nonlinear Multigrid method for the Kohn-Sham equation
* SPEAKERS
Name
Affiliation
E-mail
Prof. Jian Wang
Huzhou Normal University, China
Prof.Xin Zhou(APCTP) xzhou(at)apctp.org
* HOST(Applicant)
Name
Affiliation
E-mail
-
* DATE / TIME
2009-04-30, 3pm
* PLACE
Seminar Room 512, APCTP Headquarters, POSTECH, Pohang, Korea
* ABSTRACT
A nonlinear multigrid technique, named the full approximation storage(FAS) scheme, is applied to the Kohnham equations in solids. The problem is traditionally solved through a self-consistent loop, within each loop an eigenvalue problem is repeated. In the new method, the approximate solution is manipulated on multiscale grids, especially, the coarse grid equation defined according to FAS is solved to correct the error. So, the eigen value problem, which is often the most time-consuming part, need to be solved only once.
