Excited Σ states of the hydrogen-antihydrogen molecule
Abstract
Adopting explicitly correlated Kołos-Wolniewicz-type basis functions, the Born-Oppenheimer potential curves of a number of excited Σ states of the hydrogen-antihydrogen system ( H H ¯ ) were calculated for both, even and odd, symmetries, including also free positronium states. It is demonstrated that the excited leptonic states support rovibrational states with energies close to the ground-state dissociation threshold. As a consequence, the excited leptonic states need to be considered in theoretical treatments of ground-state H – H ¯ collisions.
Fields of Study & Subjects
Atomic and Molecular Physics
Quantum and Classical Electrodynamics
Advanced Chemical Physics Studies
Publication details
- Journal / source
- Physical Review A
- Publisher
- American Physical Society (APS)
- Volume
- 113
- Issue
- 6
- Publication date
- 6 May 2026
- Language
- EN