Eur. Phys. J. D (2014) 68: 249
https://doi.org/10.1140/epjd/e2014-50251-y

Regular Article

On stability of nanoscale electron-positron droplets

Saint-Petersburg State Polytechnic University, Polytechnicheskaya st. 29, 195251, St. Petersburg, Russia

^a e-mail: andreiipatov@mail.ru

Received: 26 March 2014
Received in final form: 29 May 2014
Published online: 11 September 2014

Abstract

This paper presents the results of the total energy calculation for electroneutral electron-positron clusters with closed shells. The calculations were performed within the Random Phase Approximation with Exchange to take into account the many-particle correlations. The results show that the calculated energies per one electron-positron pair are lower than the corresponding energy per one pair of dipositronium molecule. The most stable electron-positron clusters are found for the cluster sizes in the interval of 20–40 pairs.