https://doi.org/10.1140/epjd/e2012-30442-4
Regular Article
Testing one-body density functionals on a solvable model
1
Zentrum für Interdisziplinäre Forschung,
Wellenberg 1, 33615
Bielefeld,
Germany
2
Departamento de Física Teórica, Universidad de
Zaragoza, Zaragoza
50009,
Spain
3
Escuela de Matemática, Universidad de Costa Rica,
2060
San José, Costa
Rica
a e-mail: joseph.varilly@ucr.ac.cr
Received:
17
July
2012
Received in final form:
27
August
2012
Published online:
30
October
2012
There are several physically motivated density matrix functionals in the literature, built from the knowledge of the natural orbitals and the occupation numbers of the one-body reduced density matrix. With the help of the equivalent phase-space formalism, we thoroughly test some of the most popular of those functionals on a completely solvable model.
Key words: Atomic Physics
© EDP Sciences, Società Italiana di Fisica and Springer-Verlag 2012