Radio frequency spectra of Feshbach molecules in quasi-two dimensional geometries

TL;DR

This paper presents an analytic formula for the radio frequency spectra of Feshbach molecules in quasi-2D geometries, highlighting the importance of final state interactions and effective range corrections, validated by experimental data.

Contribution

It introduces a simple analytic model for RF spectra of Feshbach molecules in quasi-2D systems, incorporating final state interactions and effective range effects.

Findings

Analytic formula accurately describes RF spectra in quasi-2D.

Effective range corrections significantly influence bound-state energies.

Experimental data confirms the model's validity.

Abstract

The line shape of radio frequency spectra of tightly bound Feshbach molecules in strong transverse confinement can be described by a simple analytic formula that includes final state interactions. By direct comparison to experimental data, we clarify the role of effective range corrections to two-body bound-state energies in lower dimensions.