Mott transition in the Hubbard model away from particle-hole symmetry

Agradecimentos: D.J.G. acknowledges support form the FAPESP and CAPES-BA programs. E.M. acknowledges support from FAPESP and CNPq. Part of the computations were performed with the aid of CENAPAD-SP (National Center of High Performance Processing in São Paulo), project UNICAMP/FINEP-MCT. We also acknowledge support from CONICET, the Guggenheim Foundation, and PICT 03-06343 and 03-13829 of ANPCyT Abstract: We solve the dynamical mean-field theory equations for the Hubbard model away from the particle-hole-symmetric case using the density matrix renormalization group method. We focus our study on the region of strong interactions and finite doping where two solutions coexist. We obtain precise predictions for the boundaries of the coexistence region. In addition, we demonstrate the capabilities of this precise method by obtaining the frequency-dependent optical conductivity spectra FUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESP COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ FINANCIADORA DE ESTUDOS E PROJETOS - FINEP Aberto