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arXiv · hep-ph/9908475

Pion Properties in the 1/N_c-corrected NJL model

M. Oertel·M. Buballa·J. Wambach
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Abstract

We investigate the effect of mesonic fluctuations on the pion propagator in the Nambu-Jona-Lasinio (NJL) model by explicitly taking into account 1/N_c corrections. Because of the non-renormalizability of the model we have to regularize the meson loops with an independent cutoff parameter Lambda_M. Whereas for moderate values of Lambda_M the pion properties change only quantitatively we encounter strong instabilities for larger values of Lambda_M.

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M. Oertel, M. Buballa, J. Wambach. 2000-01-03. Pion Properties in the 1/N_c-corrected NJL model. https://doi.org/10.1016/s0370-2693(00)00215-x

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