QRAP: a numerical code for projected (Q)uasi-particle (RA)ndom (P)hase approximation

TL;DR

This paper introduces QRAP, a computational tool for quasiparticle random phase approximation models, enabling detailed nuclear structure calculations and neutrino-nucleus reaction analyses, exemplified by cross-section computations for 56Fe and 12C.

Contribution

The paper presents a comprehensive computer code for QRPA and PQRPA models, facilitating nuclear matrix element evaluations relevant to neutrino interactions and nuclear decay processes.

Findings

Successfully calculated cross sections for 56Fe and 12C.

Detailed explanation of code implementation and output.

Application potential to various nuclei and decay processes.

Abstract

A computer code for quasiparticle random phase approximation-QRPA and projected quasiparticle random phase approximation-PQRPA models of nuclear structure is explained in details. An important application of the code consists in evaluating nuclear matrix elements involved in neutrino-nucleus reactions. As an example, cross section for 56Fe and 12C are calculated and the code output is explained. The application to other nuclei and the description of other nuclear and weak decay processes is also discussed.