Quantum Theory of Many-Particle Systems. I. Physical Interpretations by Means of Density Matrices, Natural Spin-Orbitals, and Convergence Problems in the Method of Configurational Interaction
- 15 March 1955
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 97 (6) , 1474-1489
- https://doi.org/10.1103/physrev.97.1474
Abstract
In order to calculate the average value of a physical quantity containing also many-particle interactions in a system of antisymmetric particles, a set of generalized density matrices are defined. In order to permit the investigation of the same physical situation in two complementary spaces, the Hermitean density matrix of order has two sets of indices of each variables, and it is further antisymmetric in each set of these indices.
Keywords
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