Pion Properties in the 1/N_c-corrected NJL model
classification
✦ hep-ph
nucl-th
keywords
lambdamodelpionpropertiesvaluesaccountbecausec-corrected
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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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