Seminar

9305 1490258454

Time-dependent molecular fields: The derivation of wave equations

  • Datum: 05.04.2017
  • Uhrzeit: 10:30
  • Vortragender: Prof. Michael Baer
  • The Fritz Haber Center for Molecular Dynamics, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
  • Ort: Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle (Saale)
  • Raum: Seminarraum A.2.20
  • Kontakt: office.theory@mpi-halle.mpg.de

This lecture is based on studies given in Int. J. Quantum Chem. 114, 1645 (2014) and Molec. Phys. 114, 227 (2016) and presents a theory related to the possibility to induce a novel field – called the molecular field. This field is produced via the interaction of an external electric field and a molecular system. Assuming the molecular system is made up of two coupled adiabatic states, the theory leads from one spatial curl equation, two space-time curl equations and a space-time divergence equation to a set of decoupled wave equations usually encountered for fields. In the present study, wave equations are derived for an external field with a high intensity and a short duration. For this situation, the study reveals that the just mentioned interaction creates two fields that coexist within a molecule: one is just an initial scalar field essentially identical to the original external electric field and the other, a vectorial field, produced by (two) field dressed non-adiabatic coupling terms (NACT). In addition, we mention that the wave velocities related to these two fields are identical to the wave velocity, v, of the external field.

 
Zur Redakteursansicht
loading content