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On the Role of the Annihilation Channel in Front Form Positronium

Uwe Trittmann
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Abstract

The annihilation channel is implemented into the front form calculations of the positronium spectrum presented in a previous publication. The effective Hamiltonian is calculated analytically. Its eigensolutions are obtained numerically. A complete separation of the dynamical and instantaneous part of the annihilation interaction is observed. We find the remarkable effect that the annihilation channel stabilizes the cutoff behavior of the spectrum.

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Uwe Trittmann. 1997-05-12. On the Role of the Annihilation Channel in Front Form Positronium. https://arxiv.org/abs/hep-th/9705072

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