  The Hall coefficient is related to the effective carrier density and Fermi
surface topology in noninteracting and weakly interacting systems. In strongly
correlated systems, the relation between the Hall coefficient and
single-particle properties is less clear. Clarifying this relation would give
insight into the nature of transport in strongly correlated materials that lack
well-formed quasiparticles. In this work, we investigate the DC Hall
coefficient of the Hubbard model using determinant quantum Monte Carlo in
conjunction with a recently developed expansion of magneto-transport
coefficients in terms of thermodynamic susceptibilities. At leading order in
the expansion, we observe a change of sign in the Hall coefficient as a
function of temperature and interaction strength, which we relate to a change
in the topology of the apparent Fermi surface. We also combine our Hall
coefficient results with optical conductivity values to evaluate the Hall
angle, as well as effective mobility and effective mass based on Drude theory
of metals.
