title: Potential energy curves for excited states of the hydrogen-antihydrogen system.
abstract: The potential energy curves for the hydrogen-antihydrogen (HH) system in states with a leptonic orbital angular momentum projection Lambda=0, 1, 2, 6, and 30 are presented. Within the framework of the adiabatic picture, explicitly correlated Gaussians are used as basis functions which describe accurately the hydrogen-antihydrogen interaction. The critical internuclear distances where the system transforms into positronium and protonium atoms are found. Adiabatic corrections to the potential energy curves are also estimated.
authors.affiliation: Institute of Physics, St. Petersburg State University, 198904, Uljanovskaya 1, Petrodvorets, St. Petersburg, Russia.
authors.forename: V
authors.initials: V
authors.lastname: Sharipov
authors.forename: L
authors.initials: L
authors.lastname: Labzowsky
authors.forename: G
authors.initials: G
authors.lastname: Plunien