Comment on ``Momentum density and spatial form of correlated density matrix in model two-electron atoms with harmonic confinement''
Abstract
In a recent paper A. Akbari, N. H. March, and A. Rubio [Phys. Rev. A 76, 032510 (2007)] investigated the one-electron reduced density matrix and the momentum density of several two-electron model atoms, including Hooke’s atom. The method used by the authors for deriving an integral form of the momentum density is in fact the most suited for deriving a closed-form expression of the exact reciprocal form factor, in a special case. This function is important inasmuch as it reflects the off-diagonal side of the exact reduced density matrix.
- Publication:
-
Physical Review A
- Pub Date:
- July 2008
- DOI:
- 10.1103/PhysRevA.78.016502
- arXiv:
- arXiv:0802.2561
- Bibcode:
- 2008PhRvA..78a6502R
- Keywords:
-
- 31.15.ve;
- 31.15.E-;
- Electron correlation calculations for atoms and ions: ground state;
- Density-functional theory;
- Physics - Atomic Physics;
- Physics - Chemical Physics
- E-Print:
- 7 pages. Submitted