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Collisional relaxation in shielded dipolar molecular gases
Reuben R. W. Wang, John L. Bohn·October 19, 2025
cond-mat.quant-gasAtomic PhysicsQuantum Physics
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Abstract
We discuss the influence of collisions on the dynamics of an ultracold gas whose constituents interact via dipolar forces. This dynamics is governed by the elastic scattering cross section of the molecules, which is to some extent under the experimentalist's control. We compare side-by-side several different situations, highlighting their similarities and differences. These situations are collisions between: 1) point dipoles; 2) electric-field-shielded polar molecules; and 3) microwave-shielded polar molecules, including the effect of microwave ellipticity.