TRACES OF THE REDUCED DENSITY OPERATORS REVISITED - CLOSED-FORM FORMULAS

Authors
PLANELLES J KARWOWSKI J
Citation
J. Planelles et J. Karwowski, TRACES OF THE REDUCED DENSITY OPERATORS REVISITED - CLOSED-FORM FORMULAS, Journal of physics. A, mathematical and general, 30(9), 1997, pp. 3219-3227
Citations number
17
Categorie Soggetti
Physics
Journal title
Journal of physics. A, mathematical and general → ACNP
ISSN journal
03054470
Volume
30
Issue
9
Year of publication
1997
Pages
3219 - 3227
Database
ISI
SICI code
0305-4470(1997)30:9<3219:TOTRDO>2.0.ZU;2-7
Abstract
Closed-form expressions for traces of the qth-order reduced density op erators, q-RDOs, and symmetry-adapted q-RDOs calculated in an N-electr on and spin-adapted subspace of a K-orbital Fock space are derived. Th e asymptotic form of the expression for traces of the q-RDOs, correspo nding to K >> N and K >> N >> q limits, is discussed in detail. Severa l identities fulfilled by some quantities related to the traces are de rived.