The lowest excited configuration of harmonium
Chemical Physics
2013-07-10 v2 Mathematical Physics
math.MP
Atomic and Molecular Clusters
Quantum Physics
Abstract
The harmonium model has long been regarded as an exactly solvable laboratory bench for quantum chemistry [Heisenberg, 1926]. For studying correlation energy, only the ground state of the system has received consideration heretofore. This is a spin singlet state. In this work we exhaustively study the lowest excited (spin triplet) harmonium state, with the main purpose of revisiting the relation between entanglement measures and correlation energy for this quite different species. The task is made easier by working with Wigner quasiprobabilities on phase space.
Keywords
Cite
@article{arxiv.1205.2038,
title = {The lowest excited configuration of harmonium},
author = {Carlos L. Benavides-Riveros and José M. Gracia-Bondía and Joseph C. Várilly},
journal= {arXiv preprint arXiv:1205.2038},
year = {2013}
}
Comments
Latex, 21 pages. Minor changes, 4 improved figures, references added. To appear in Physical Review A