Perturbative coherence in field theory

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1989-12-01

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American Institute of Physics (AIP)

Resumo

The basic field equations of a field theory are not always derivable from a Lagrangian. Lagrangian theories are perturbatively coherent, in the sense that they have well-defined vertices. Non-Lagrangian theories may be coherent or not. Coherent theories are, in principle, quantizable by perturbative methods. The general condition for a theory to have well-defined vertices is given. © 1989 American Institute of Physics.

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Journal of Mathematical Physics, v. 30, n. 8, p. 1866-1870, 1989.