Hall coefficient and angle-resolved photoemission in systems with strong pair fluctuations

We examine the normal-state temperature and doping dependence of the Hall c oefficient in the context of a pair-fluctuation scenario, based on a model where itinerant electrons are hybridized with localized electron pairs via a charge exchange term. We show that an anomalous behavior of the Hall effe ct, qualitatively similar to that observed in high-T-c superconductors, can be attributed to the non-Fermi-liquid properties of the single-particle sp ectral function that exhibits pseudogap features. Our calculations are base d on a dynamical mean-field procedure that relates the transport coefficien ts to the single-particle spectral function in an exact way.