Modeling positronium beyond the single particle approximation

A. Zubiaga, M. M. Ervasti, I. Makkonen, A. Harju, F. Tuomisto, M. J. Puska

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Understanding the properties of the positronium atom in matter is of interest for the interpretation of positron annihilation experiments. This technique has a unique capability for the investigation of nanometer sized voids and pores in soft molecular materials (polymers, liquids or biostructures) and porous materials. However, detailed interpretations of the experimental data rely on modeling of the annihilation properties of positronium in the host material. New applications of the technique are being developed but the computational models still are based on single particle approaches and there is no way to address the influence of the electronic properties of the host material. In this work we discuss new directions of research.

Original languageEnglish
Article number064005
Pages (from-to)1-13
JournalJournal of Physics B: Atomic Molecular and Optical Physics
Issue number6
Publication statusPublished - 29 Feb 2016
MoE publication typeA1 Journal article-refereed


  • correlated electron-positron systems
  • positron annihilation spectroscopy
  • positronium


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