@phdthesis{Albert2018,
  author    = {Albert, Julian},
  title     = {Quantum Studies on Low-Dimensional Coupled Electron-Nuclear Dynamics},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-161512},
  school      = {Universit{\"a}t W{\"u}rzburg},
  year      = {2018},
  abstract  = {In the context of quantum mechanical calculations, the properties of non-adiabatic coupling in a small system, the Shin-Metiu model, is investigated. The transition from adiabatic to non-adiabatic dynamics is elucidated in modifying the electron-nuclear interaction. This allows the comparison of weakly correlated electron-nuclear motion with the case where the strong correlations determine the dynamics. The studies of the model are extended to include spectroscopical transitions being present in two-dimensional and degenerate four-wave mixing spectroscopy. Furthermore, the quantum and classical time-evolution of the coupled motion in the complete electron-nuclear phase space is compared for the two coupling cases. Additionally, the numerically exact electron flux within the weak coupling case is compared to the Born-Oppenheimer treatment. In the last part of the thesis, the model is extended to two dimensions. The system then possesses potential energy surfaces which exhibit a typical 'Mexican hat'-like structure and a conical intersection in the adiabatic representation. Thus, it is possible to map properties of the system onto a vibronic coupling (Jahn-Teller) hamiltonian. Exact wave-packet propagations as well as nuclear wave-packet dynamics in the adiabatic and diabatic representation are performed.},
  subject      = {Theoretische Chemie},
  language  = {en}
}
@article{EngelAlbertSchubert2013,
  author    = {Engel, Volker and Albert, Julian and Schubert, Alexander},
  title     = {Two-dimensional vibronic spectroscopy of molecular predissociation},
  series = {New Journal of Physics},
  journal   = {New Journal of Physics},
  doi       = {10.1088/1367-2630/15/2/025008},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-96199},
  year      = {2013},
  abstract  = {We calculate two-dimensional (2D) spectra reflecting the time-dependent electronic predissociation of a diatomic molecule. The laser-excited electronic state is coupled non-adiabatically to a fragment channel, leading to the decay of the prepared quasi-bound states. This decay can be monitored by the three-pulse configuration employed in optical 2D spectroscopy. It is shown that in this way it is possible to state-selectively characterize the time-dependent population of resonance states with different lifetimes. A model of the NaI molecule serves as a numerical example.},
  language  = {en}
}