Recent progress in the description of positron scattering from atoms using the Convergent Close-Coupling Theory

TL;DR

This paper reviews recent advancements in the theoretical understanding of positron scattering from atoms, emphasizing the two-centre convergent close-coupling method and positronium formation, highlighting progress and remaining challenges.

Contribution

It provides a comprehensive review of recent progress in positron-atom scattering theories, especially focusing on few-electron targets and the two-centre convergent close-coupling approach.

Findings

Significant progress in modeling positronium formation.

Advancements in few-electron target scattering theories.

Ongoing challenges for multielectron systems.

Abstract

Much progress in the theory of positron scattering on atoms has been made in the ten years since the review of Surko, Gribakin and Buckman [J. Phys. B 38, R57 (2005)]. We review this progress for few-electron targets with a particular emphasis on the two-centre convergent close-coupling and other theories which explicitly treat positronium (Ps) formation. While substantial progress has been made for Ps formation in positron scattering on few-electron targets, considerable theoretical development is still required for multielectron atomic and molecular targets.