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Showing 1 to 4 of 4 for “"infrared divergences"”.
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Some aspects of non-Abelian gauge theories
… each order of perturbation theory. To avoid the infrared problem, the Higgs mechanism is invoked to give masses to the vector bosons of the theory. lye find that the scattering amplitude exponentiates to a Regge form. This result is qualitatively different from an earlier published calculation. …
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Radiative Corrections to Low Energy Theorems
… It is shown that all the results concerning infrared divergences obtained within the theory of quantum electrodynamics of the electron-photon system are, in fact, exact in strong interactions. The problem of radiative corrections to low-energy theorems is the primary concern of this …
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Critical behavior of the n-vector and charged n-vector models from an exact solution to the screening approximation
… heat and demonstrate the cancellation of infrared divergences. The charged n-vector model, which consists of the ordinary n-vector model with a coupling to an abelian gauge field, is appropriate for the scaling regions of the superconducting pbase transition and smectic A~nematic …
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Deep inelastic scattering at high energies
… DIS. This involves the general investigation of infrared singularities in a quantum field theory by use of the theory of pinch singular surfaces (PSS). We describe how PSS offer a useful tool for understanding many aspects of field theories such as the cancellation of infrared divergences in …