Universal three-body physics for fermionic dipoles

TL;DR

This paper investigates the universal three-body physics of fermionic dipoles, predicting a long-lived three-dipole state, analyzing its properties, and revealing significant three-body recombination effects at ultracold energies.

Contribution

It introduces a universal three-dipole state in fermionic dipoles, analyzes its properties, and explores the effects of dipolar interactions on three-body physics.

Findings

Prediction of a long-lived three-dipole state near a two-dipole resonance

Identification of the spatial configuration and scaling laws of the universal state

Revelation of significant three-body recombination at ultracold energies

Abstract

A study of the universal physics for three oriented fermionic dipoles in the hyperspherical adiabatic representation predicts a single long-lived three-dipole state, which exists in only one three-body symmetry, should form near a two-dipole resonance. Our analysis reveals the spatial configuration of the universal state, and the scaling of its binding energy and lifetime with the strength of the dipolar interaction. In addition, three-body recombination of fermionic dipoles is found to be important even at ultracold energies. An additional finding is that an effective long-range repulsion arises between a dipole and a dipolar dimer that is tunable via dipolar interactions.