Quasi-universal dipolar scattering in cold and ultracold gases

2009/01/09 by J L Bohn, J. L. Bohn, M. Cavagnero +3 · 106 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Collision #Cross section (physics) #Dipole #Inverse #Physics of Superconductivity and Magnetism #Polar #Quantum chaos and dynamical systems #Scattering #Scattering cross-section #Scattering length #Universality (dynamical systems) #physics.atom-ph

paper · pdf · doi:10.1088/1367-2630/11/5/055039

published in New Journal of Physics 11(5), 055039 (IOP Publishing) · 19 pages, 5 figures

arxiv created 2009/01/09 · openalex publication_date 2009/05/14 · arxiv updated 2015/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We investigate the scattering cross section of aligned dipolar molecules in low-temperature gases. Over a wide range of collision energies relevant to contemporary experiments, the cross section declines in inverse proportion to the collision speed, and is given nearly exactly by a simple semiclassical formula. At yet lower energies, the cross section becomes independent of energy, and is reproduced within the Born approximation to within corrections due to the s-wave scattering length. While these behaviors are universal for all polar molecules, nevertheless interesting deviations from universality are expected to occur in the intermediate energy range.

Citations

• Pseudopotential treatment of two aligned dipoles under external harmonic confinement
• Magnetoelectrostatic Trapping of Ground State OH Molecules
• Anisotropic pseudopotential for polarized dilute quantum gases
• Strongly Correlated 2D Quantum Phases with Cold Polar Molecules: Controlling the Shape of the Interaction Potential
• Onium-onium scattering at fixed impact parameter: exact equivalence between the color dipole model and the BFKL pomeron
• Collisional Control of Ground State Polar Molecules and Universal Dipolar Scattering

Cited by

• Time-of-flight expansion of trapped dipolar Fermi gases: From the collisionless to the hydrodynamic regime