Low-Energy Universality in Atomic and Nuclear Physics

TL;DR

This paper discusses an effective field theory applicable to atomic and nuclear systems with large scattering lengths, analyzing universal properties like the Efimov effect and including higher order corrections.

Contribution

It introduces a unified effective field theory framework for atomic and nuclear systems and reports recent progress on higher order corrections.

Findings

Analysis of Efimov effect in three- and four-body systems

Inclusion of finite-range corrections in the theory

Progress in extending the theoretical framework

Abstract

An effective field theory developed for systems interacting through short-range interactions can be applied to systems of cold atoms with a large scattering length and to nucleons at low energies. It is therefore the ideal tool to analyze the universal properties associated with the Efimov effect in three- and four-body systems. In this "progress report", we will discuss recent results obtained within this framework and report on progress regarding the inclusion of higher order corrections associated with the finite range of the underlying interaction.