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Medientyp: Sonstige Veröffentlichung; E-Artikel Titel: Multiconfiguration time-dependent Hartree approach for electron-nuclear correlation in strong laser fields Beteiligte: Jhala, Chirag [VerfasserIn]; Lein, Manfred [VerfasserIn] Erschienen: College Park, MD : American Physical Society, 2010 Erschienen in: Physical Review A 81 (2010), Nr. 6 Ausgabe: published Version Sprache: Englisch DOI: https://doi.org/10.15488/1975; https://doi.org/10.1103/PhysRevA.81.063421 Schlagwörter: High order harmonic generation ; Multiconfiguration ; Single-particle functions ; Hydrogen molecular ion ; Nuclear degree of freedom ; Degrees of freedom (mechanics) ; Time-dependent ; Laser optics ; Laser fields ; Degree of freedom ; Laser induced ; Hartree approach ; External laser fields ; High energy physics ; Strong laser field Entstehung: Anmerkungen: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen. Beschreibung: 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. Zugangsstatus: Freier Zugang