The repulsive Hubbard model has been immensely useful in understanding strongly
correlated electron systems and serves as the paradigmatic model of the field. Despite its …

The Hubbard model is the simplest model of interacting fermions on a lattice and is of similar
importance to correlated electron physics as the Ising model is to statistical mechanics or the …

The “sign problem”(SP) is a fundamental limitation to simulations of strongly correlated
matter. It is often argued that the SP is not intrinsic to the physics of particular Hamiltonians …

Theoretical ideas and experimental results concerning high-temperature superconductors
are reviewed. Special emphasis is given to calculations performed with the help of …

In narrow-band systems electrons can interact with each other via a short-range nonretarded
attractive potential. The origin of such an effective local attraction can be polaronic or it can …

We report on a numerical study of the two-dimensional Hubbard model and describe two
new algorithms for the simulation of many-electron systems. These algorithms allow one to …

We study the superconducting pairing correlations in the ground state of the doped Hubbard
model—in its original form without hopping beyond nearest neighbor or other perturbing …

Organic Superconductors is an introduction to organic conductors and superconductors and
a review of the current status of the field. First, organic conductors are described, then the …

The pairing symmetry of the Hubbard Hamiltonian on a triangle lattice with a nearly flat low-
energy band is studied with the determinant quantum Monte Carlo method (DQMC). We …

We discuss the solution of nontrivial conserving approximations for electronic correlation
functions in systems with strong collective fluctuations. The formal properties of conserving …