Artigo
Positronium interaction and its Bose-Einstein condensation
Fecha
2009-01-01Registro en:
Physica Status Solidi C - Current Topics In Solid State Physics, Vol 6, No 11. Weinheim: Wiley-v C H Verlag Gmbh, v. 6, n. 11, p. 2272-2276, 2009.
1610-1634
10.1002/pssc.200982066
WOS:000279544900005
8031087349809439
Autor
Universidade Estadual Paulista (Unesp)
Resumen
We present the actual state of affairs and future perspectives in the study of a quantum system of a collection of positronium (Ps) atoms. The interaction of a Ps atom with other atoms and molecules and specially with another Ps atom is described in some detail as Ps-Ps interaction should play a crucial role in the dynamics of an assembly of Ps atoms. Using a simple model-exchange potential, we could describe the available experimental results of Ps scattering reasonably well. The present scenario of the observation of Ps2 molecule, Ps Bose-Einstein condensate (BEC) and the annihilation laser from a Ps BEC is presented. Possibilities of a Ps BEC formation via laser cooling of Ps atoms and via Ps formation in cavities are considered and difficulties with each procedure discussed (C) 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim