Swelling of positronium confined in a small cavity.

The electron density at the positron (contact density) in the ground state positronium (Ps) formed in condensed matter is generally found to be lower than in vacuum. This is usually attributed to microscopic electric fields which polarize Ps, by acting on the two particles of the atom. In this paper...

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Bibliographic Details
Main Authors: Giovanni Consolati, Fiorenza Quasso, Davide Trezzi
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2014-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC4196961?pdf=render