Energy and momentum transfer in one-dimensional trapped gases by stimulated light scattering

TL;DR

This paper investigates how stimulated light scattering can be used to measure energy and momentum transfer in one-dimensional trapped Bose gases, providing insights into their dynamical structure and in-trap dynamics.

Contribution

It offers a detailed analysis of energy and momentum transfer measurements in 1D trapped gases, highlighting the role of in-trap dynamics and their relation to the dynamical structure factor.

Findings

Energy and momentum transfer relate to the dynamical structure factor.

In-trap dynamics significantly influence the transferred momentum.

Weak perturbation regime measurements are effective for probing system properties.

Abstract

In ultracold atoms settings, inelastic light scattering is a preeminent technique to reveal static and dynamic properties at nonzero momentum. In this work, we investigate an array of one-dimensional trapped Bose gases, by measuring both the energy and the momentum imparted to the system via light scattering experiments. The measurements are performed in the weak perturbation regime, where these two quantities - the energy and momentum transferred - are expected to be related to the dynamical structure factor of the system. We discuss this relation, with special attention to the role of in-trap dynamics on the transferred momentum.