Welcome to the Antimatter & many-body theory group of Dermot Green at Queen’s University Belfast!

We develop theoretical and computational methods to describe the interactions of antimatter with atoms, molecules and condensed matter, to provide fundamental insight required to support and direct experiment, inform other theory, and develop antimatter-based technologies. The group director is Dr Dermot Green.

See the tabs above for publications, team members etc. See below for news items.

Antimatter-bonded molecules!

Our latest work, on positronically-bonded molecules, has been published in the Journal of Chemical Physics, in the highly-selective 2024 Emerging Investigators Special Collection and as a JCP Featured Article.

Molecules as we typically know them are comprised of two or more atoms glued together by the sharing of electrons. But, in 2019 a South-American research group (Charry, Reyes and Varella) predicted antimatter-bonded molecules, specifically molecules who’s fragments were anions glued together by a positron. We have developed and applied our many-body theory of positron-molecule interactions to describe such positronically-bonded molecules, using it to predict positronically-bonded molecules with molecular fragments, e.g., the binding of two NCO negative ions by a positron.

See J. P. Cassidy, J. Hofierka, B. Cunningham and D. G. Green, J. Chem. Phys. 160, 084304 (2024) [Emerging Investigators Special Collection].