Influence of the energy-band structure on ultracold reactive processes in lattices
arXiv:1604.00238 · doi:10.1103/PhysRevA.93.032703
Abstract
We study theoretically ultracold collisions in quasi one-dimensional optical traps for bosonic and fermionic reactive molecules in the presence of a periodic potential along the trap axis. Elastic, reactive, and umklapp processes due to non-conservation of the center of mass motion are investigated for parameters of relevant experimental interest. The model naturally keeps into account the effect of excited energy bands and is particularly suited for being adapted to rigorous close-coupled calculations. Our formalism shows that a correct derivation of the parameters in tight-binding effective models must include the strong momentum dependence of the coupling constant we predict even for deep lattices.
13 pages, 11 figures
References in corpus (7)
- Many-Body Physics with Ultracold Gases
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Orbital superfluidity in the -band of a bipartite optical square lattice
- Suppressing the loss of ultracold molecules via the continuous quantum Zeno effect
- Universal rates for reactive ultracold polar molecules in reduced dimensions
- Two-channel Feshbach physics in a structured continuum
- Polar molecule reactive collisions in quasi-1D systems