Media type: E-Article; Text Title: Multiconfiguration time-dependent Hartree approach for electron-nuclear correlation in strong laser fields Contributor: Jhala, Chirag [Author]; Lein, Manfred [Author] imprint: College Park, MD : American Physical Society, 2010 Published in: Physical Review A 81 (2010), Nr. 6 Issue: published Version Language: English DOI: https://doi.org/10.15488/1975; https://doi.org/10.1103/PhysRevA.81.063421 Keywords: Degrees of freedom (mechanics) ; Hartree approach ; Strong laser field ; Time-dependent ; Laser fields ; Single-particle functions ; High order harmonic generation ; High energy physics ; Laser induced ; Laser optics ; Hydrogen molecular ion ; Degree of freedom ; External laser fields ; Multiconfiguration ; Nuclear degree of freedom Origination: Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen. Description: The multiconfiguration time-dependent Hartree approach is applied to study the electron-nuclear correlation in the dynamics of molecules subject to strong external laser fields, using the example of a model hydrogen molecular ion. The ground state of the system is well described by as few as two single-particle functions per degree of freedom. A significantly larger but moderate number of configurations is required to predict laser-induced fragmentation probabilities and high-order harmonic generation spectra accurately, showing that the correlation between electronic and nuclear degree of freedom is strongly increased by the presence of the laser field. © 2010 The American Physical Society. Access State: Open Access