Multigrid methods in density functional theory
β Scribed by Thomas L. Beck; Karthik A. Iyer; Michael P. Merrick
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 151 KB
- Volume
- 61
- Category
- Article
- ISSN
- 0020-7608
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β¦ Synopsis
A multigrid method for real-space solution of the KohnαSham equations is presented. By using this multiscale approach, the problem of critical slowing down typical of iterative real-space solvers is overcome. The method scales linearly in computer time with the number of electrons if the orbitals are localized. Here, we describe details of our multigrid method, present preliminary many-electron numerical results illustrating the efficiency of the solver, and discuss its strengths and limitations.
π SIMILAR VOLUMES
## Abstract For Abstract see ChemInform Abstract in Full Text.
Density functional theory for a single excited state is presented using Kato's theorem and the concept of adiabatic connection. The degenerate case is also detailed. The optimized potential method is generalized. The generalized Krieger, Li, and Ε½ . Iafrate KLI approximation is derived.
## Abstract The geometry optimization in delocalized internal coordinates is discussed within the framework of the density functional theory program deMon. A new algorithm for the selection of primitive coordinates according to their contribution to the nonredundant coordinate space is presented. W