Truncation scheme of time-dependent density-matrix approach
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A truncation scheme of the Bogoliubov-Born-Green-Kirkwood-Yvon hierarchy for reduced density matrices, where a three-body density matrix is approximated by the antisymmetrized products of two-body density matrices, is proposed. This truncation scheme is tested for three model Hamiltonians. It is shown that the obtained results are in good agreement with the exact solutions.
KeywordsDensity Matrix Hubbard Model Magnetic Dipole Moment Occupation Probability Reduce Density Matrice
- 18.V.D. Barger, M.G. Olsson, Classical electricity and magnetism (Allyn and Bacon, Boston, 1987).Google Scholar