The Hubbard model of attractively interacting fermions provides a paradigmatic setting for
fermion pairing. It features a crossover between Bose-Einstein condensation of tightly bound …

Initial characterizations of the fermion sign problem focused on its evolution with spatial
lattice size L and inverse temperature β, emphasizing the implications of the exponential …

Numerical approaches to the correlated electron problem have achieved considerable
success, yet are still constrained by several bottlenecks, including high order polynomial or …

The relationship between electron–phonon (e-ph) interactions and charge-density-wave
(CDW) order in the bismuthate family of high-temperature superconductors remains …

We introduce the SmoQyDQMC. jl package, a Julia implementation of the determinant
quantum Monte Carlo algorithm. SmoQyDQMC. jl supports generalized tight-binding …

The attractive Hubbard model has become a model readily realizable with ultracold atoms
on optical lattices. However, the superconducting (superfluid) critical temperatures T c's are …

The interplay of spin and motional degrees of freedom forms a key element in explaining
stripe formation accompanied by sublattice reversal of local antiferromagnetic ordering in …

The evolution of an attractive polarized two-component Fermi gas at zero temperature is
analyzed as its polarization is progressively decreased, from full polarization (corresponding …

We carry out a sign-problem-free quantum Monte Carlo calculation of a bilayer model with a
repulsive intralayer Hubbard interaction and a ferromagnetic interlayer interaction. The latter …

The complicated ways in which electrons interact in many-body systems such as molecules
and materials have long been viewed through the lens of local electron correlation and …