Use of causality conditions in quantum theory, pp. 1612-27 in Physical Review Vol. 95, No. 6, September 15, 1954. DISPERSION THEORY

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First edition, complete journal issue in original printed wrappers, of the introduction of dispersion theory, a dynamical scheme for calculating scattering amplitudes in quantum field theory. The analyticity of the scattering amplitudes and the dispersion relations they obeyed were derived from the assumptions of microcausality and crossing symmetry. The introduction of dispersion theory paved the way for the discovery of new profound relations called 'sum rules'. Until the advent of quantum chromodynamics in the 1970s, dispersion theory was the main approach to the physics of the strong interaction. Dispersive methods continue to be intensely used in this field, complementing the ab initio calculations based on lattice QCD and/or (chiral) effective field theories. Large 8vo, pp. 1365-1753. Original printed wrappers (rear wrapper a little creased). N° de ref. del artículo ABE-1610125679455

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