Strong electronic correlations pose one of the biggest challenges to solid state theory.
Recently developed methods that address this problem by starting with the local, eminently …

In this work we present a comprehensive analysis of collective electronic fluctuations and
their effect on single-particle properties of the Hubbard model. Our approach is based on a …

While the pseudogap dominates the phase diagram of hole-doped cuprates, connecting the
antiferromagnetic parent insulator at low doping to the strange metal at higher doping, its …

We study the physics of high-temperature cuprate superconductors starting from the highly
degenerate four-site plaquette of the t− t′− U Hubbard model as a reference system. The …

Superconductivity has entered the nickel age marked by enormous experimental and
theoretical efforts. Notwithstanding, synthesizing nickelate superconductors remains …

Systems with strong electronic Coulomb correlations often display rich phase diagrams
exhibiting different ordered phases involving spin, charge, or orbital degrees of freedom …

We have developed a strong-coupling perturbation scheme for a general doped Hubbard
model around a particle-hole-symmetric reference system, which is free from the fermionic …

Using the Sierpinski gasket (triangle) and carpet (square) lattices as examples, we
theoretically study the properties of fractal superconductors. For that, we focus on the …

A considerable success in phenomenological description of high-T c superconductors has
been achieved within the paradigm of Quantum Critical Point (QCP)—a parental state of a …

Elucidating the physics of the single-orbital Hubbard model in its intermediate-coupling
regime is a key missing ingredient to our understanding of metal-insulator transitions in real …