Hamburg 2009 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 56: Poster IV

Q 56.16: Poster

Donnerstag, 5. März 2009, 16:30–19:00, VMP 9 Poster

Coherent tunneling of atoms and dimers in half spaces — •Michael Grupp, Reinhold Walser, and Wolfgang Schleich — Institut für Quantenphysik, Universität Ulm, D-89069 Ulm, Germany

Feshbach scattering of fermions in an one-dimensional optical lattice is an intensively investigated subject [1,2]. Scattering theory in free space differs significantly from scattering in a lattice. By breaking the continuous translation symmetry the center-of-mass momentum of the two particles becomes a new control parameter of Feshbach scattering. We have reported numerical results of this effect in [3]. In the present contribution we study a simple analytic model of this effect by considering the coherent Feshbach scattering of atoms and dimers in half spaces.
 I. Bloch, J. Dalibard, W. Zwerger, Rev. Mod. Phys. 80, 885 (2008) [2] N. Nygaard, R. Piil, K. Mølmer, Phys. Rev. A 78, 023617 (2008)
 M. Grupp, R. Walser, W. Schleich, A. Muramatsu and M. Weitz,

J. Phys. B: At. Mol. Opt. Phys. 40 (2007) 2703-2718