Abstract
The factorization of nonperturbative effects in theS matrix of the non linear sigma model is investigated. We prove that, in each order of 1/N, theS matrix amplitudes can be written as a series in power of a dinamically generated mass times a convergent perturbative series.
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This work was partially supported by (1) FAPESP and (2) CNPq
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Brunelli, J.C., Gomes, M. On the convergence of perturbation series: theS matrix of the non linear sigma model. Z. Phys. C - Particles and Fields 42, 649–652 (1989). https://doi.org/10.1007/BF01557671
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DOI: https://doi.org/10.1007/BF01557671