Dynamics of three-body correlations in quenched unitary Bose gases

TL;DR

This paper studies how three-body correlations develop in quenched unitary Bose gases, revealing oscillations linked to Efimov trimers and the violation of scaling invariance through log-periodic modulation.

Contribution

It provides a theoretical analysis of the early-stage dynamics of three-body correlations, highlighting oscillations and non-trivial parameter dependence in unitary Bose gases.

Findings

Three-body correlations grow gradually compared to two-body correlations.

Three-body contact exhibits coherent oscillations as a signature of Efimov trimers.

Scaling invariance is violated via log-periodic modulation of correlations.

Abstract

We investigate dynamical three-body correlations in the Bose gas during the earliest stages of evolution after a quench to the unitary regime. The development of few-body correlations is theoretically observed by determining the two- and three-body contacts. We find that the growth of three-body correlations is gradual compared to two-body correlations. The three-body contact oscillates coherently, and we identify this as a signature of Efimov trimers. We show that the growth of three-body correlations depends non-trivially on parameters derived from both the density and Efimov physics. These results demonstrate the violation of scaling invariance of unitary bosonic systems via the appearance of log-periodic modulation of three-body correlations.