Accurate high-harmonic spectra from time-dependent two-particle reduced density matrix theory
Atomic Physics
2017-03-22 v1
Abstract
The accurate description of the non-linear response of many-electron systems to strong-laser fields remains a major challenge. Methods that bypass the unfavorable exponential scaling with particle number are required to address larger systems. In this paper we present a fully three-dimensional implementation of the time-dependent two-particle reduced density matrix (TD-2RDM) method for many-electron atoms. We benchmark this approach by a comparison with multi-configurational time-dependent Hartree-Fock (MCTDHF) results for the harmonic spectra of beryllium and neon. We show that the TD-2RDM is very well-suited to describe the non-linear atomic response and to reveal the influence of electron-correlation effects.
Keywords
Cite
@article{arxiv.1611.00888,
title = {Accurate high-harmonic spectra from time-dependent two-particle reduced density matrix theory},
author = {Fabian Lackner and Iva Březinová and Takeshi Sato and Kenichi L. Ishikawa and Joachim Burgdörfer},
journal= {arXiv preprint arXiv:1611.00888},
year = {2017}
}
Comments
14 pages, 10 figures