70775 20190529115222.0 doi 10.1016/j.nuclphysb.2013.07.001 sideral 82496 ART-2013-82496 eng (orcid)0000-0002-8215-1413 Azcoiti, V. Universidad de Zaragoza Phase structure of a generalized Nambu-Jona-Lasinio model with Wilson fermions in the mean-field or large-N expansion 2013 Access copy available to the general public Unrestricted We analyze the vacuum structure of a generalized lattice Nambu-Jona-Lasinio model with two flavors of Wilson fermions, such that its continuum action is the most general four-fermion action with "trivial" color interactions, and having a SU(2)V×SU(2)A symmetry in the chiral limit. The phase structure of this model in the space of the two four-fermion couplings shows, in addition to the standard Aoki phases, new phases with <¿-¿5¿>¿0, in close analogy to similar results recently suggested by some of us for lattice QCD with two degenerate Wilson fermions. This result shows how the phase structure of an effective model for low-energy QCD cannot be entirely understood from Wilson Chiral Perturbation Theory, based on the standard QCD chiral effective Lagrangian approach. info:eu-repo/grantAgreement/ES/MINECO/FPA2012-35453 info:eu-repo/grantAgreement/ES/MICINN/FPA2009-09638 info:eu-repo/grantAgreement/ES/MICINN/CPAN-CSD2007-00042 info:eu-repo/grantAgreement/ES/INFN–MICINN/AIC-D-2011-0663 info:eu-repo/grantAgreement/EC/FP7/238353/EU/Strong Interaction Supercomputing Training Network/STRONGNET info:eu-repo/grantAgreement/ES/DGA/E24-2 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.946 2013 PHYSICS, PARTICLES & FIELDS 8 / 27 = 0.296 2013 Q2 T1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Di Carlo, G. (orcid)0000-0002-4742-4279 Follana, E. Universidad de Zaragoza Giordano, M. Vaquero, A. 2004 405 Universidad de Zaragoza Dpto. Física Teórica Área Física Teórica 875, 1 (2013), 45-62 Nucl. phys., B NUCLEAR PHYSICS B 0550-3213 245314 http://zaguan.unizar.es/record/70775/files/texto_completo.pdf Versión publicada 48124 http://zaguan.unizar.es/record/70775/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:70775 articulos driver 2019-05-29-11:42:04 ARTICLE