Excited states of the helium-antihydrogen system

Details Excited states of the helium-antihydrogen system Excited states of the helium-antihydrogen system

2007-04-17

arxiv.org/abs/0704.2197v1

Phys. Rev. Lett. 98 (2007) 103001

Physics

Atomic Physics

Scientific paper

Potential energy curves for excited leptonic states of the helium-antihydrogen system are calculated within Ritz' variational approach. An explicitly correlated ansatz for the leptonic wave function is employed describing accurately the motion of the leptons (two electrons and positron) in the field of the helium nucleus and of the antiproton with arbitrary orbital angular momentum projection $\Lambda$ onto the internuclear axis. Results for $\Lambda$=0, 1 and 30 are presented. For quasibound states with large values of $\Lambda$ and rotational quantum numbers $J>\Lambda$ no annihilation and rearrangement decay channels occur, i. e. they are metastable.

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