Abstract
With the advent of gauge theories it became necessary to reconsider many well-established ideas in quantum field theories. The canonical formalism, formerly regarded as the most conventional and rigorous approach, has now been abandoned by many authors. The path-integral concept cannot replace the canonical formalism in defining a theory, since path integrals in four dimensions are meaningless without additional and rather ad hoc renormalization prescriptions.
Reprint of CERN Yellow Report 73–9: Diagrammar by G. ’t Hooft and M. Veltman with the kind permission of CERN
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© 1974 Plenum Press, New York
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’t Hooft, G., Veltman, M. (1974). Diagrammar. In: Speiser, D., Halzen, F., Weyers, J. (eds) Particle Interactions at Very High Energies. NATO Advanced Study Institutes Series, vol 4. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-2826-1_5
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DOI: https://doi.org/10.1007/978-1-4684-2826-1_5
Publisher Name: Springer, Boston, MA
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