Alonso, J.L.Boucaud, Ph.Martín Mayor, Víctorvan der Sijs, A.J.2023-06-202023-06-201998-040920-563210.1016/S0920-5632(97)00863-3https://hdl.handle.net/20.500.14352/60333© 1998 Elsevier Science B.V. International Symposium on Lattice Field Theory (Lattice 97) (15th. 1997. Edinburgh, Scotland). Financially supported by DGICICYT AEN 96-1670,74 and by Acción Integrada Hispano-Francesa HF1996-0022.We present a 2+1-dimensional lattice model for the copper oxide superconductors and their parent compounds, in which both the charge and spin degrees of freedom are treated dynamically. The spin-charge coupling parameter is associated to the doping fraction in the cuprates. The model is able to account for the various phases of the cuprates and their properties, not only at low and intermediate doping but also for (highly) over-doped compounds. We acquire a qualitative understanding of highTc superconductivity as a Bose-Einstein condensation of boun d charge pairs.engjournal articlehttp://dx.doi.org/10.1016/S0920-5632(97)00863-3https://www.sciencedirect.comhttps://arxiv.org/abs/hep-lat/9710035v1open access53PhysicsParticles and fields.Física-Modelos matemáticos