Three-body universality in ultracold $p$-wave resonant mixtures

TL;DR

This paper investigates three-body collisions in ultracold mixtures with resonant $p$-wave interactions, revealing universal scattering pathways and regimes where three-body effects dominate, impacting stability and lifetime of quantum fluids.

Contribution

It uncovers universal three-body scattering pathways and a regime where three-body interactions surpass inelastic decay and two-body effects in ultracold $p$-wave mixtures.

Findings

Universal scattering pathways emerge on resonance.

Three-body interactions can dominate over decay and two-body effects.

Mass-ratio-dependent trimer resonances are identified.

Abstract

We study three-body collisions within ultracold mixtures with resonant interspecies $p$-wave interactions. Our results for the three-body effective interaction strength and decay rate are crucial towards understanding the stability and lifetime of these dilute quantum fluids. On resonance, we find that a class of universal scattering pathways emerges, regardless of the details of the short-range interactions. This gives rise quite generally to a remarkable regime where three-body effective interactions dominate over both inelastic decay and two-body effective interactions. Additionally, we find a series of mass-ratio-dependent trimer resonances further from resonance.