Ferreira, P. L.2014-05-202014-05-201992-07-01Nuovo Cimento Della Societa Italiana Di Fisica A-nuclei Particles and Fields. Bologna: Editrice Compositori Bologna, v. 105, n. 7, p. 1047-1049, 1992.1124-1861http://hdl.handle.net/11449/34420The nuclear dependence of the neutron-proton mass difference is examined in a relativistic harmonic quark model with the assumption of a swelling of the individual nucleon originated by a decrease of the spring constant inside the nuclear medium. A decrease of the neutron-proton mass difference is obtained which is reasonably small and in the right direction to cope with the Nollen-Schiffer anomaly in mirror nuclei.1047-1049engBAG MODELS AND OTHER PHENOMENOLOGICAL QUARK MODELSCOULOMB ENERGIESArtigo10.1007/BF02730843WOS:A1992JP98100013Acesso restrito