Systematic study of infrared energy corrections in truncated oscillator spaces

TL;DR

This paper investigates the convergence of nuclear energy calculations using the HFB method with Gogny interactions, benchmarking infrared correction techniques to improve extrapolation to infinite model spaces.

Contribution

It introduces and benchmarks an infrared energy correction method for better convergence in truncated basis nuclear calculations.

Findings

Infrared correction improves convergence of nuclear energies.

The method is applicable to global nuclear mass calculations.

Benchmark results show enhanced accuracy with the correction.

Abstract

We study the convergence properties of nuclear binding energies and two-neutron separation energies obtained with self-consistent mean-field calculations based on the Hartree-Fock-Bogolyubov (HFB) method with Gogny-type effective interactions. Owing to lack of convergence in a truncated working basis, we employ and benchmark one of the recently proposed infrared energy correction techniques to extrapolate our results to the limit of an infinite model space. We also discuss its applicability to global calculations of nuclear masses.