One of the most challenging problems in solid state systems is the microscopic analysis of
electronic correlations. A paramount minimal model that encodes correlation effects is the …

Theoretical methods that are accurate for both short-distance observables and long-
wavelength collective modes are still being developed for the Hubbard model. Here, we …

We study the half-filled extended Hubbard model on a two-dimensional square lattice using
cluster dynamical mean-field theory on clusters of size 8–20. We show that the model …

The Kane-Mele model is known to show a quantized spin Hall conductivity at zero
temperature. Including Hubbard interactions at each site leads to a quantum phase …

A slave-spin representation of fermion operators has recently been proposed for the half-
filled single and multiband Hubbard model. We show that with the addition of a gauge …

We study the extended Hubbard model on a two-dimensional half-filled square lattice using
the dynamical cluster approximation. We present results on the phase boundaries between …

The semimetal to antiferromagnet quantum phase transition of the Hubbard model on the
honeycomb lattice has come to the forefront in the context of the proposal that a semimetal to …

We study the extended Hubbard model away from half filling on a two-dimensional square
lattice using cluster dynamical mean field theory on clusters of size 8. We show that the …

Even at weak to intermediate coupling, the Hubbard model poses a formidable challenge. In
two dimensions in particular, standard methods such as the random phase approximation …

4Hb-TaS 2 has been proposed to possess unconventional superconductivity with broken
time-reversal symmetry due to distinctive layered structure, featuring a heterojunction …