The mystery of the infamous sign problem in quantum Monte Carlo simulations mightily
restricts applications of the method in fermionic and frustrated systems. A recent work …

Understanding the relationship between stripe order and other phenomena, including
antiferromagnetism and superconductivity, is one of the central issues in cuprate …

We obtain the Seebeck coefficient or thermopower S, which determines the conversion
efficiency from thermal to electrical energy, for the two-dimensional Hubbard model on …

Understanding if attractive fermions in an unbalanced occupation of its flavors can give rise
to a superfluid state in two dimensions (2D), realizing the Fulde-Ferrel-Larkin-Ovchinnikov …

Auxiliary field quantum Monte Carlo simulations of interacting fermions require sampling
over a Hubbard-Stratonovich field h introduced to decouple the interactions. The weight for a …

Over the past few decades, magnetic frustration has been under intense debate due to its
unusual properties. For instance, frustration in the kagome lattice suppresses long-range …

One of the fundamental questions about high-temperature cuprate superconductors is the
size of the Fermi surface underlying the superconducting state. By analyzing the single …

Abstract The Hofstadter–Hubbard model captures the physics of strongly correlated
electrons in an applied magnetic field, which is relevant to many recent experiments on …

Using the determinant quantum Monte Carlo method, we investigate the metal-insulator
transition in the interacting disordered Hubbard model of a Lieb lattice in which the system …

Determinant quantum Monte Carlo (DQMC) is used to determine the pairing and magnetic
response for a Hubbard model built up from four-site clusters—a two-dimensional square …