Confined States of a Positronium in a Spherical Quantum Dot

Details Confined States of a Positronium in a Spherical Quantum Dot Confined States of a Positronium in a Spherical Quantum Dot

2010-10-27

arxiv.org/abs/1010.5588v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

Confined states of an electron-positron pair in the spherical quantum dot (QD) are theoretically investigated in three size-quantization (SQ) regimes: strong, weak and intermediate. In the strong SQ regime, analytical expressions for the wave functions (WFs) and energy of the pair are obtained. In the weak SQ regime, the positronium energy and binding energy are analytically calculated. To calculate the positronium energy in the intermediate SQ regime, variational and numerical methods are used. It is shown that, in the corresponding limits, the results obtained by variational method agree with those obtained in the strong and weak SQ regimes.

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