Ab initio many-body calculations of deuteron-4He scattering and 6Li states

TL;DR

This paper extends ab initio methods to deuteron-4He scattering and 6Li states, providing detailed formalism and comparing results with experimental data and standard calculations.

Contribution

It introduces an extended NCSM/RGM formalism for deuteron projectiles and applies it to scattering and bound states of 6Li, including breakup effects.

Findings

Calculated deuteron-4He scattering cross sections.

Predicted energies of 6Li bound and unbound states.

Good agreement with experimental data.

Abstract

We extend the ab initio no-core shell model/resonating-group method (NCSM/RGM) to projectile-target binary-cluster states where the projectile is a deuteron. We discuss the formalism in detail and give algebraic expressions for the integration kernels. Using a soft similarity-renormalization-group evolved chiral nucleon-nucleon potential, we calculate deuteron-4He scattering and investigate 6Li bound and unbound states. Virtual three-body breakup effects are obtained in an approximated way by including excited pseudo-states of the deuteron in the calculation. We compare our results to experiment and to a standard NCSM calculation for 6Li.