Study on cooling of positronium for Bose-Einstein condensation

K. Shu, X. Fan, T. Yamazaki, T. Namba, S. Asai, K. Yoshioka, M. Kuwata-Gonokami

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


A proposed new method of cooling positronium is to realize the Bose-Einstein condensation (BEC) of positronium. We perform detailed studies of three processes: (1) thermalization processes between positronium and the silica walls of a cavity, (2) Ps-Ps scattering and (3) laser cooling. The thermalization process is shown to be not sufficient for BEC. Ps-Ps collision is shown to have a big effect on the cooling performance. We combine both methods and establish an efficient cooling process for BEC. We also propose a new optical laser system for the cooling.

Original languageEnglish (US)
Article number104001
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number10
StatePublished - Apr 22 2016


  • Bose-Einstein condensation
  • laser cooling
  • positronium

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics


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