Stability of light positronic atoms: Quantum Monte Carlo studies

A. Harju, B. Barbiellini, R.M. Nieminen

Research output: Contribution to journalArticleScientificpeer-review

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We present accurate ground-state energies for the positronium atom in a Coulomb field of point charge Z (XZPs), for the positronium hydrogen (HPs) and positronium lithium (LiPs) atoms. Calculations are done using the diffusion quantum Monte Carlo (DQMC) method. For XZPs, the critical value of Z for binding is examined. While HPs is stable, the results show that LiPs is unstable against dissociation to a lithium atom and a positronium.
Original languageEnglish
Pages (from-to)4849-4853
JournalPhysical Review A
Issue number6
Publication statusPublished - 1996
MoE publication typeA1 Journal article-refereed


  • Positron annihilation
  • Quantum Monte Carlo


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