Single-nucleon properties and pair correlations in nuclear matter from chiral two- and three-nucleon forces

TL;DR

This paper examines how chiral two- and three-nucleon forces influence single-particle properties and pairing correlations in nuclear matter, highlighting systematic differences from other interaction models.

Contribution

It provides a detailed analysis of the effects of chiral three-nucleon forces on nucleon self-energy, spectral functions, and pairing in infinite nuclear matter.

Findings

Chiral interactions produce characteristic differences in spectral functions.

Three-nucleon forces significantly affect pairing correlations.

Systematic variations observed between chiral and phenomenological models.

Abstract

We investigate single-particle properties in infinite nuclear matter using a variety of interactions. One of the focal points is to study the impact of chiral three-nucleon forces on the nucleon self-energy and related quantities, such as spectral function and momentum distribution. We also present results for pairing correlations in nuclear matter. We find characteristic and systematic differences between the predictions obtained with the (softer) chiral interactions and those based on one-boson-exchange or phenomenology.