Energy Dependence of Scattering Ground State Polar Molecules

Abstract

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.

Accepted PRA, 10 pages, 5 figures

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• Universal ultracold collision rates for polar molecules of two alkali-metal atoms
• A Simple Quantum Model of Ultracold Polar Molecule Collisions
• 2-Dimensional Dipolar Scattering
• Collisional Control of Ground State Polar Molecules and Universal Dipolar Scattering
• Quasi-two dimensional dipolar scattering
• Universal resonant ultracold molecular scattering
• Three body recombination of ultracold dipoles to weakly bound dimers
• Resonance phenomena in ultracold dipole-dipole scattering
• Two dimensional dipolar scattering with a tilt
• Total angular momentum representation for atom-molecule collisions in electric fields
• Universal bound and scattering properties for two dipoles
• Few-body physics of ultracold atoms and molecules with long-range interactions
• Transparent Electrodes for High E-Field Production Using A Buried ITO Layer