Leading-order nucleon self-energy in relativistic chiral effective field theory

TL;DR

This paper uses thermal field theory to calculate the nucleon self-energy from one-pion exchange in nuclear matter, introducing a self-consistent numerical method and analyzing the Fock exchange contribution to nuclear energy.

Contribution

It presents a novel self-consistent numerical scheme for calculating nucleon self-energy in nuclear matter using relativistic chiral effective field theory.

Findings

Repulsive Fock exchange contribution to energy per nucleon in symmetric nuclear matter.

Demonstrated convergence of the numerical scheme.

Microscopic calculation of nucleon self-energy from one-pion exchange.

Abstract

We apply thermal field theory methods to compute microscopically the nucleon self-energy arising from one-pion exchange in isospin-symmetric nuclear matter and neutron matter. A self-consistent numerical scheme is introduced and its convergence is demonstrated. The repulsive contribution from the Fock exchange diagram to the energy per nucleon in symmetric nuclear matter is obtained.