Instabilities and inaccuracies of multi-configuration time-dependent Hartree-Fock

We demonstrate that the widely used multi-configuration time-dependent Hartree- Fock method is restricted to a certain class of applications and fails for scenarios where periods of low entanglement occur during the propagation. By using illustrative and physically relevant examples, based on the Hu...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2016-03, Vol.696 (1), p.12009
Main Authors: Hinz, C M, Bauch, S, Bonitz, M
Format: Article
Language:English
Subjects:
Configurations
Cures
Entanglement
Physics
Solid state physics
Time dependence
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We demonstrate that the widely used multi-configuration time-dependent Hartree- Fock method is restricted to a certain class of applications and fails for scenarios where periods of low entanglement occur during the propagation. By using illustrative and physically relevant examples, based on the Hubbard model of solid state physics, we show the existence of serious instabilities in the method itself and demonstrate that the method does not converge with respect to electron correlations. Possible cures of the approach are discussed.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/696/1/012009