Efimov Effect in Ultracold Microwave-Shielded Polar Molecules

Abstract

A quantum-mechanical description is presented for the three-body physics of shielded dipolar molecules, including a prediction of observable Efimov physics. Despite the anisotropic and long-range nature of the interaction, shielding enables a regime in which universality emerges already at the two-body level and extends to the three-body sector, where Efimov physics emerges. On the negative side of the scattering-length resonance, computed trimer binding energies display the characteristic scaling expected for Efimov resonances. Finally, the sudden approximation can be used to create trimer bound states, starting from positive energy trap states as a way to create or detect these molecular trimers. Moreover, the three-body parameter expressed in dipolar units is found to be universal.

12 pages, 4 figures

References in corpus (33)

• Feshbach Resonances in Ultracold Gases
• The physics of dipolar bosonic quantum gases
• Universality in Few-body Systems with Large Scattering Length
• Quantum-State Controlled Chemical Reactions of Ultracold KRb Molecules
• Efimov Physics: a review
• Dipolar physics: A review of experiments with magnetic quantum gases
• Universal few-body physics and cluster formation
• Stable Topological Superfluid Phase of Ultracold Polar Fermionic Molecules
• Evaporation of microwave-shielded polar molecules to quantum degeneracy
• Origin of the Three-body Parameter Universality in Efimov Physics
• Observation of Bose-Einstein Condensation of Dipolar Molecules
• Microwave shielding of ultracold polar molecules
• Repulsive shield between polar molecules
• Linking Ultracold Polar Molecules
• Controlling the scattering length of ultracold dipolar molecules
• Suppression of inelastic collisions of polar ${}^1\Sigma$ state molecules in an electrostatic field
• Few-body physics in resonantly interacting ultracold quantum gases
• Adiabatic hyperspherical study of triatomic helium systems
• Collisionally Stable Gas of Bosonic Dipolar Ground State Molecules
• Ultracold Sticky Collisions: Theoretical and Experimental Status
• Shielding ${}^2\Sigma$ ultracold dipolar molecular collisions with electric fields
• Microwave shielding of bosonic NaRb molecules
• The Efimov effect for three interacting bosonic dipoles
• Microwave shielding of ultracold polar molecules with imperfectly circular polarization
• Ultracold field-linked tetratomic molecules
• Effective potential and superfluidity of microwave-dressed polar molecules
• Double Microwave Shielding
• Three-Body Recombination of Ultracold Microwave-Shielded Polar Molecules
• Field-induced long-lived supermolecules
• Universality of Efimov states in highly mass-imbalanced cold-atom mixtures with van der Waals and dipole interactions
• Interferometry of Efimov states in thermal gases by modulated magnetic fields
• Universal trimers with p-wave interactions and the faux-Efimov effect
• Universal Bound States with Bose-Fermi Duality in Microwave-Shielded Polar Molecules