Nonrelativistic variational calculations of the positronium molecule and the positronium hydride

Sergiy Bubin, Ludwik Adamowicz

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Abstract

Highly accurate ground-state nonrelativistic variational calculations of Ps2, H1 Ps, and H 1 Ps are reported. The calculations have been performed using 5000 explicitly correlated Gaussian basis functions and yielded the lowest variational energy upper bounds for these systems to date. The relative accuracies of the energies obtained are of the order of 4× 10-10 a.u. for Ps2 and 2× 10-9 a.u. for HP. Several expectation values have also been computed for each system, as well as electron-positron annihilation rates.

Original languageEnglish (US)
Article number052502
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume74
Issue number5
DOIs
StatePublished - Nov 23 2006

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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