Normalization and perturbation theory for tightly bound states of the spinor Bethe-Salpeter equation
| Authors |
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| Publication date |
1976
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| Journal |
Nuovo Cimento della Società Italiana di Fisica. A
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| Volume | Issue number |
33
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| Pages (from-to) |
257-280
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| Number of pages |
24
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| Organisations |
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Faculty of Science (FNWI) - Institute of Physics (IoP) - Institute for Theoretical Physics Amsterdam (ITFA)
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| Abstract |
The normalisation integrals for the tightly-bound-state solutions of the spinor Bethe-Salpeter equation that have been derived recently are evaluated. Ghost states are found to appear when the continuous parameters characterising the type of fermion-boson interaction reach a critical value. Perturbation-theoretical methods are used to determine, for a pair of fermions with slightly different masses, the strength of the couplings that give rise to bound states with small values of the rest frame energy.
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| Document type |
Article
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