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Real-space density functional theory and time dependent density functional theory using finite/infinite element methods
- Source :
-
Computer Physics Communications . Dec2012, Vol. 183 Issue 12, p2581-2588. 8p. - Publication Year :
- 2012
-
Abstract
- Abstract: We present a numerical approach using the finite element method to discretize the equations that allow getting a first-principles description of multi-electronic systems within DFT and TD-DFT formalisms. A strictly local polynomial function basis set is used in order to represent the entire real-space domain. Infinite elements are introduced to model the infinite external boundaries in the case of Hartree’s equation. The diagonal mass matrix is obtained using a close integration rule, reducing the generalized eigenvalue problem to a standard one. This framework of electronic structure calculation is embedded in a high performance computing environment with a very good parallel behavior. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00104655
- Volume :
- 183
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Computer Physics Communications
- Publication Type :
- Periodical
- Accession number :
- 79562058
- Full Text :
- https://doi.org/10.1016/j.cpc.2012.07.007