Collisional Aspects of Bosonic and Fermionic Dipoles in Quasi-Two-Dimensional Confining Geometries

Abstract

Fundamental aspects of ultracold collisions between identical bosonic or fermionic dipoles are studied under quasi-two-dimensional (Q2D) confinement. In the strongly dipolar regime, bosonic and fermion species are found to share important collisional properties as a result of the confining geometry, which suppresses the inelastic rates irrespective of the quantum statistics obeyed. A potential negative is that the confinement causes dipole-dipole resonances to be extremely narrow, which could make it difficult to explore Q2D dipolar gases with tunable interactions. Such properties are shown to be universal, and a simple WKB model reproduces most of our numerical results. In order to shed light on the many-body behavior of dipolar gases in Q2D we have analyzed the scattering amplitude and developed an energy-analytic form of the pseudopotentials for dipoles. For specific values of the dipolar interaction, the pseudopotential coefficient can be tuned to arbitrarily large values, indicating the possibility of realizing Q2D dipolar gases with tunable interactions.

4.1 pages, 3 figures

References in corpus (12)

• A High Phase-Space-Density Gas of Polar Molecules
• Strongly correlated 2D quantum phases with cold polar molecules: controlling the shape of the interaction potential
• Schemes for robust quantum computation with polar molecules
• Reactions of ultracold alkali metal dimers
• Cold polar molecules in 2D traps: Tailoring interactions with external fields for novel quantum phases
• Universal rates for reactive ultracold polar molecules in reduced dimensions
• Strong dependence of ultracold chemical rates on electric dipole moments
• Dynamics of ultracold molecules in confined geometry and electric field
• Electric field suppression of ultracold confined chemical rates
• Pseudo-potential of a power-law decaying interaction in two-dimensional systems
• Low-energy resonances and bound states of aligned bosonic and fermionic dipoles
• Universal resonant ultracold molecular scattering

Cited by in corpus (14)

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• Dipolar confinement-induced resonances of ultracold gases in waveguides
• Two dimensional dipolar scattering with a tilt
• Anisotropic quantum scattering in two dimensions
• Field-induced long-lived supermolecules
• Universal bound and scattering properties for two dipoles
• Quasi-One-Dimensional Dipolar Quantum Gases
• Resonant control of polar molecules in an optical lattice
• Observing dipolar confinement-induced resonances in waveguides
• Few-body physics of ultracold atoms and molecules with long-range interactions
• Exact two-body solutions and Quantum defect theory of two dimensional dipolar quantum gas
• Analysis of two and three dipolar bosons in a spherical harmonic trap