Repulsively bound atom pairs: Overview, Simulations and Links

TL;DR

This paper reviews the physics, experimental observation, and numerical simulation of repulsively bound atom pairs in optical lattices, highlighting their relation to other bound states in physical systems.

Contribution

It provides a comprehensive overview of the theory, experimental methods, and numerical simulations of repulsively bound pairs, connecting experimental results with advanced modeling techniques.

Findings

Experimental observation of repulsively bound pairs

Comparison between experimental data and DMRG simulations

Discussion of the relation to other bound states

Abstract

We review the basic physics of repulsively bound atom pairs in an optical lattice, which were recently observed in the laboratory, including the theory and the experimental implementation. We also briefly discuss related many-body numerical simulations, in which time-dependent Density Matrix Renormalisation Group (DMRG) methods are used to model the many-body physics of a collection of interacting pairs, and give a comparison of the single-particle quasimomentum distribution measured in the experiment and results from these simulations. We then give a short discussion of how these repulsively bound pairs relate to bound states in some other physical systems.