Using the Barbieri-Remiddi lowest-order equation for calculating the decay rate and the energy shift of positronium
Thesis/Dissertation
·
OSTI ID:5613786
Working in Coulomb gauge and using the lowest-order equation proposed by Barbieri and Remiddi the author calculated the decay rate of parapositronium and the energy-shift of orthopositronium. These results were derived without the necessity of performing the wave-function and the vertex renormalization subtractions. This means that the Barbieri-Remiddi lowest-order equation leads to the perturbative relations which give the finite results without needing to perform the above mentioned subtractions (at least in the first-order perturbation theory and in the Coulomb gauge.) Contributions of all diagrams are calculated and presented separately, in order to make them useful for the derivations of higher order corrections.
- Research Organization:
- Michigan State Univ., East Lansing (USA)
- OSTI ID:
- 5613786
- Country of Publication:
- United States
- Language:
- English
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