Dynamics of ultracold molecules in confined geometry and electric field

Details Dynamics of ultracold molecules in confined geometry and electric field Dynamics of ultracold molecules in confined geometry and electric field

2010-10-15

arxiv.org/abs/1010.3245v1

Phys. Rev. A 83, 012705 (2011)

Physics

Atomic Physics

13 pages, 6 figures

Scientific paper

10.1103/PhysRevA.83.012705

We present a time-independent quantum formalism to describe the dynamics of molecules with permanent electric dipole moments in a two-dimensional confined geometry such as a one-dimensional optical lattice, in the presence of an electric field. Bose/Fermi statistics and selection rules play a crucial role in the dynamics. As examples, we compare the dynamics of confined fermionic and bosonic polar KRb molecules under different confinements and electric fields. We show how chemical reactions can be suppressed, either by a "statistical suppression" which applies for fermions at small electric fields and confinements, or by a "potential energy suppression", which applies for both fermions and bosons at high electric fields and confinements. We also explore collisions that transfer molecules from one state of the confining potential to another. Although these collisions can be significant, we show that they do not play a role in the loss of the total number of molecules in the gas.

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