Session S6 - Large-Scale Computational Approaches to Few-Body Physics Problems.
INVITED session, Wednesday afternoon, March 24
516AB, Palais des Congres
Significant progress in treating the most fundamental few-body atomic collision problems has been enabled recently by implementation of large-scale computational approaches for solving the one- and two-electron, time-dependent, multidimensional Schrodinger equation utilizing lattice techniques. Results of one variant of this broad class of methods will be illustrated through description of specific examples involving inelastic transitions among bound states and to the multi-center, electronic continuum in fundamental ion-atom collisions. Advantages of the lattice approach stem from its circumvention of various shortcomings of perturbation theories, close coupling expansions, and other approximation methods, and from the insight it allows one to develop regarding the underlying quantum dynamics. The principal goal of this line of development has been to augment the basic toolkit available to describe fundamental, atomic-scale, few-body dynamics utlizing direct numerical approaches.