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We analyze electroproduction in a non-Abelian gauge model of the strong interactions using the techniques of Christ, Hasslacher, and Mueller. The theory is asymptotically free and consistent with scaling up to logarithms. All logarithmic factors appear as inverse powers of ln ( - q 2 ) and hence...
We show that even for some external lines on the mass shell, the procedure of dropping the mass-insertion term in the Callan-Symanzik equation is justified for the form factor at high squared momentum transfer in a certain class of models. This provides a very quick method of summing leading...
We present the details of a powerful new technique used in an exact calculation of the contribution of 6 sixth-order vertex graphs to the anomalous magnetic moment of the electron. By introducing four-dimensional spherical coordinates, the momentum-space integrals can be evaluated directly. The...
It is shown that when both the electromagnetic field and the vector-meson field are quantized in the presence of an anomalous-magnetic-moment interaction the energy density of the combined system is positive-definite and satisfies the Dirac-Schwinger covariance condition. This result shows that...
The high-energy behavior of the graviton-bremsstrahlung cross section resulting from the quantum theory of gravitation is examined. The total radiated gravitational energy and its frequency as well as angular distributions are computed for various values of the incident particle velocity. A...
It is shown that the bound electromagnetic four-momentum of an arbitrarily moving classical charged particle as defined by Teitelboim can be evaluated in a direct way with the help of Stokes's theorem. The calculation is based on the observation that the nonradiative part of the energy-momentum...
In the theory of a quantized scalar field interacting with the classical Einstein gravitational field, the formal expression for the energy-momentum tensor has infinite expectation values. We propose a procedure for defining, in certain cosmological models, suitable finite expectation values of...
Using current algebra and Bjorken-Johnson-Low techniques we exhibit the finiteness of second-order radiative corrections to strangeness-changing and strangeness-preserving semileptonic weak processes in the context of an SU ( 2 ) L × U ( 1 ) gauge model (with the hadronic extension as suggested...
We show that a vanishing total cross section σ L ( ν , q 2 ) for virtual photons is not compatible with the presence of operator Schwinger terms in the proton-proton matrix element of the equal-time electromagnetic commutator if ν W 2 scales.
We investigate a class of possible radiative corrections to the low-energy theorem for π 0 → γ γ in theories with massive charged vector mesons. The absence of these corrections is verified to fourth order in a spontaneously broken, non-Abelian gauge model.
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