Electromagnetic Mass Shifts by Dispersion Theory
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概要
- 論文の詳細を見る
In the second order approximation of the electromagnetic interaction the mass shifts are expressed in terms of the forward Compton scattering amplitudes of the spacelike photon by the dispersion theoretical treatment. We generalize Cottingham's work. It is emphasized that 1) our results hold for any particle, including the composite particle, with any spin, 2) there are many expressions with different forms depending on the choices of the amplitudes for which we assume the unsubtracted dispersion relation. In spin 0 case, one of them has the contribution from the contact interaction in the elastic part, but we have also another expression having the contribution from the contact interaction in the inelastic part. In spin 1/2 case, Cottingham's result is merely one of these expressions. The result given by the Feyn-man-Speisman method is another special expression of ours.
- 理論物理学刊行会の論文
- 1967-11-25
著者
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Yamamoto Kunio
Institute Of Physics College Of General Education Osaka University
-
Taguchi Yukio
Institute Of Physics College Of General Education Osaka University : The Department Of Physics Unive
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Taguchi Yukio
Institute Of Physics College Of General Education Osaka University
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