The Landau-Zener formula.
The Landau-Zener formula for the probability that a nonadiabatic transition has taken place is derived without solving directly the usual second-order differential equation. This is achieved in just a few steps by using contour integration.
Wittig
Curt
C
Department of Chemistry, University of Southern California, Los Angeles, California 90089-0482, USA. wittig@usc.edu