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On the Relativistically Improved Integration in Perturbation Theory

1951
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Progress of theoretical physics
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Previously,I)we proposed a new method to integrate in relativistically invariant manner the integral appearing in perturbation calculation. Hitherto, in various problems of the quantum field theory, the customary perturbation method has frequently given results evidently destroying the relativistic covariance; for example, in the problem of the self-energy of a moving electron. But, since the syste,m of quantum field theory is of a relativistically invariant structure, it must be concluded that

doi:10.1143/ptp.5.266
fatcat:4ugdm6viujhj7fm2njzxhm6h6e