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A: Fachverband Atomphysik
A 26: Posters: BECs, ultracold gases and plasmas
A 26.10: Poster
Thursday, March 13, 2008, 16:30–18:30, Poster C3
Multi-channel scattering in cylindrical confining trap — •Shahpoor Saeidian1, Vladimir Melezhik2, and Peter Schmelcher1 — 1Universität Heidelberg, Heidelberg, Germany — 2JINR,Dubna,Russian Federation
We suggest a grid method for multi-channel scattering of two particles under a transverse harmonic confinement. With this approach we analyze the transverse excitations of two colliding particles under the action of the confining trap. We consider collisions of two identical as well as distinguishable particles in the harmonic traps with single frequency permitting the center-of-mass (c.m.) separation in both the cases. In the zero-energy limit in single-mode regime we reproduce the known confinement-induced resonances (CIRs) for bosonic, fermionic and mixed collisions. The collisions under the tranverse harmonic confinement then analyzed in the multi-mode regime up to four open transverse channels. Possible applications can include, e.g., atom-atom collisions in atom wave guides and impurity scattering in quantum wires.