@article{2012-ahlbrecht-werner-new-j-phys-v14-p073050, Abstract = {

We show that the presence of an interaction in the quantum walk of two atoms leads to the formation of a stable compound, a molecular state. The wave-function of the molecule decays exponentially in the relative position of the two atoms, hence it constitutes a true bound state. Furthermore, for a certain class of interactions we develop an effective theory and find that the dynamics of the molecule is described by a quantum walk in its own right. We propose a setup for the experimental realization as well as sketch the possibility to observe quasi-particle effects in quantum many body systems.

}, Author = {Ahlbrecht, A. AND Alberti, A. AND Meschede, D. AND Scholz, V. B. AND Werner, A. H. AND Werner, R. F.}, Journal = {New J. Phys.}, Pages = {073050}, Title = {{Molecular binding in interacting quantum walks}}, Volume = {14}, Year = {2012} }