Energy Dependence of Scattering Ground State Polar Molecules

Details Energy Dependence of Scattering Ground State Polar Molecules Energy Dependence of Scattering Ground State Polar Molecules

2007-07-20

arxiv.org/abs/0707.3003v2

Phys. Rev. A 76, 052703 (2007)

Physics

Atomic Physics

Accepted PRA, 10 pages, 5 figures

Scientific paper

10.1103/PhysRevA.76.052703

We explore the total cross section of ground state polar molecules in an electric field at various energies, focusing on RbCs and RbK. An external electric field polarizes the molecules and induces strong dipolar interactions leading to non-zero partial waves contributing to the scattering even as the collision energy goes to zero. This results in the need to compute scattering problems with many different values of total M to converge the total cross section. An accurate and efficient approximate total cross section is introduced and used to study the low field temperature dependence. To understand the scattering of the polar molecules we compare a semi-classical cross section with quantum unitarity limit. This comparison leads to the ability to characterize the scattering based on the value of the electric field and the collision energy.

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