Theory of torsional control for G16-type molecules

Thomas Grohmann, Tamar Seideman, Monika Leibscher

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We introduce a four-dimensional quantum model for describing the torsional control with moderately strong, non-resonant laser pulses of G16-type molecules in the electronic ground state, based on the symmetry-adapted variational method. We define conditions for which lower-dimensional models, commonly used to simulate the strong-field control of molecular torsions, are reliable approximations to a four-dimensional treatment. In particular, we study the role of different types of rotational-torsional couplings - the field-free coupling and the field-induced coupling - and show that the conclusions recently drawn on the role of rotational-torsional couplings in the process of torsional alignment are not correct in general. Furthermore, we demonstrate how important an adequate description of the molecular polarizability is for reliably predicting the torsional alignment.

Original languageEnglish (US)
Article number094304
JournalJournal of Chemical Physics
Issue number9
StatePublished - Mar 7 2018

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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