Evidence for d-wave superconductivity in the repulsive Hubbard-model

TL;DR

This paper provides numerical evidence for d-wave superconductivity in the repulsive Hubbard model, estimating a critical temperature around 30K for U=4, using advanced quantum Monte Carlo simulations.

Contribution

The study introduces a novel finite size scaling approach and demonstrates d-wave superconductivity in the Hubbard model with quantitative estimates of T_c.

Findings

Evidence of d-wave pairing in the Hubbard model

Estimated T_c around 30K for U=4

Introduces a new finite size scaling method

Abstract

We perform numerical simulations of the Hubbard model using the projector Quantum Monte Carlo method. A novel approach for finite size scaling is discussed. We obtain evidence in favor of d-wave superconductivity in the repulsive Hubbard model. For U=4, $T_c$ is roughly estimated as $T_c\approx 30K$.