Abstract. A comment is presented on the XIIIth International Workshop on Low-Energy Positron and Positronium Physics (held at UNICAMP, Campinas, Brazil, 27– 30 July 2005). Exciting progress was reported on a range of antimatter research areas. The focus of the conference is on understanding fundamental positron and positronium scattering and annihilation from gas-phase atoms and molecules. Other hot topics included antihydrogen production and antimatter- and matter-bound states. We discuss some of the achievements and outstanding questions that have arisen during the past two years and discuss some directions for the future.

PACS numbers: 36.10.Dr, 34.50.−s, 34.80.Uv, 20.00, 42.10

Print publication: Issue 3 (September 2006)
Received 6 March 2006, accepted for publication 1 May 2006
Published 9 August 2006