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00925njm 22002777a 4500 dc Dobado González, Antonio author Peláez Sagredo, José Ramón author 1992-07-23 In this letter we show how it is possible to obtain the large N(f) limit of chiral perturbation theory (chi-PT) in the chiral limit. In particular, we compute explicitly the Nambu-Goldstone boson (NGB) elastic scattering amplitude to leading order in 1/N (N being the number of NGB fields) to all powers in the external momenta. This amplitude is unitary to order 1/N and it can incorporate resonant behavior. The price to pay is the introduction of an infinite set of renormalized coupling constants that can be summarized in a single generating function. Playing with these constants, it is possible to simulate the linear sigma model and many others in the same large N limit. 0370-2693 10.1016/0370-2693(92)90171-Y https://hdl.handle.net/20.500.14352/58753 http://dx.doi.org/10.1016/0370-2693(92)90171-Y http://www.sciencedirect.com/ On the large Nf limit of chiral perturbation-theory