Differential Scattering and Rethermalization in Ultracold Dipolar Gases

Abstract

Analytic expressions for the differential cross sections of ultracold atoms and molecules that scatter primarily due to dipolar interactions are derived within the first Born approximation, and are shown to agree with the partial wave expansion. These cross sections are applied to the problem of cross-dimensional rethermalization. Strikingly, the rate of rethermalization can vary by as much as a factor of two, depending on the orientation of polarization of the dipoles. Thus the anisotropic dipole-dipole interaction can have a profound effect even on the behavior of a nondegenerate ultracold gas.

24 pages, 5 figures

References in corpus (8)

• Bose-Einstein Condensation of Erbium
• Quantum degenerate dipolar Fermi gas
• d-wave collapse and explosion of a dipolar Bose-Einstein condensate
• Reaching Fermi degeneracy via universal dipolar scattering
• Collisional Control of Ground State Polar Molecules and Universal Dipolar Scattering
• Pseudo-potential treatment of two aligned dipoles under external harmonic confinement
• Universal resonant ultracold molecular scattering
• An effective many-body theory for strongly interacting polar molecules

Cited by in corpus (28)

• Dipolar physics: A review of experiments with magnetic quantum gases
• Dipolar evaporation of reactive molecules to below the Fermi temperature
• Tuning of dipolar interactions and evaporative cooling in a three-dimensional molecular quantum gas
• s-wave scattering lengths of the strongly dipolar bosons ${}^{162}$Dy and ${}^{164}$Dy
• Collisionally Stable Gas of Bosonic Dipolar Ground State Molecules
• Feshbach Resonances in an Erbium-Dysprosium Dipolar Mixture
• Anisotropic expansion of a thermal dipolar Bose gas
• Anisotropic relaxation dynamics in a dipolar Fermi gas driven out of equilibrium
• Random to chaotic temperature transition in low-field Fano-Feshbach resonances of cold thulium atoms
• Accurate determination of the scattering length of erbium atoms
• Properties of strongly dipolar Bose gases beyond the Born approximation
• Anisotropic thermalization of dilute dipolar gases
• Two-temperature momentum distribution in a Thulium magneto-optical trap
• Nonequilibrium dynamics of an ultracold dipolar gas
• Anisotropic collisions of dipolar Bose-Einstein condensates in the universal regime
• Linear Response of a Periodically Driven Thermal Dipolar Gas
• Thermoviscous Hydrodynamics in Non-Degenerate Dipolar Bose Gases
• Thermal Conductivity of an Ultracold Paramagnetic Bose Gas
• Anisotropic acoustics in dipolar Fermi gases
• Time-of-flight expansion of trapped dipolar Fermi gases: From the collisionless to the hydrodynamic regime
• Effect of short-range interaction for collision of ultracold dipoles
• Spectroscopic Measurement of the Softness of Ultra-Cold Atomic Collisions
• Reflections on dipolar quantum fluids
• Ultra-cold Collisions between Spin-Orbit-Coupled Dipoles: General Formalism and Universality
• Dipolar confinement-induced molecular states in harmonic waveguides
• Nonequilibrium steady state in a large magneto-optical trap
• Aspects of arbitrarily oriented dipoles scattering in plane: short-range interaction influence
• Strongly dipolar molecular Bose-Einstein condensates: From few- to many-body physics