Series of broad resonances in atomic three-body systems

TL;DR

This paper re-examines broad resonance series in atomic three-body systems using Faddeev-Merkuriev equations, linking them to the Gailitis mechanism caused by polarization potentials.

Contribution

It provides a detailed analysis of broad resonance series in atomic three-body systems and relates them to the Gailitis mechanism, expanding understanding of their origin.

Findings

Resonances are broad and align at each threshold with increasing gaps.

Resonance patterns are consistent across thresholds and symmetries.

Resonances are connected to the Gailitis mechanism due to polarization potential.

Abstract

We re-examine the series of resonances found earlier in atomic three-body systems by solving the Faddeev-Merkuriev integral equations. These resonances are rather broad and line-up at each threshold with gradually increasing gaps, the same way for all thresholds and irrespective of the spatial symmetry. We relate these resonances to the Gailitis mechanism, which is a consequence of the polarization potential.