Nucleon-Nucleon effective field theory with dibaryon fields

TL;DR

This paper develops a non-relativistic chiral effective theory with dibaryon fields to accurately calculate nucleon-nucleon scattering amplitudes at next-to-next-to-leading order, enhancing understanding of nuclear interactions.

Contribution

It introduces a novel effective field theory framework incorporating dibaryon fields for precise nucleon-nucleon scattering calculations.

Findings

Achieved next-to-next-to-leading order accuracy in scattering amplitudes.

Demonstrated the effectiveness of dibaryon fields in nuclear EFT.

Provided improved theoretical predictions for nucleon interactions.

Abstract

We report on a calculation of the nucleon-nucleon scattering amplitudes in the $^1S_0$ and $^3S_1$-$^3D_1$ channels at next-to-next to leading order using a recently proposed non-relativistic chiral effective theory, which includes dibaryon field as fundamental degrees of freedom.