EPJ Web of Conferences 23, 00006 (2012)
https://doi.org/10.1051/epjconf/20122300006

A simple case of d(x²-y²) pairing: Hubbard ladder

Department of Physics, Izmir Institute of Technology, Urla 35430, Turkey

Abstract

We study the strength and the temperature scale of the d(x²-y²) pairing correlations in the Hubbard model on a ladder lattice using Quantum Monte Carlo (QMC) simulations. In particular, we present QMC results on the particle-particle interaction and the solution of the Bethe-Salpeter equation for the d(x²-y²)-wave BCS channel. These data show that there are strong d(x²-y²) pairing correlations in the Hubbard ladder for certain values of the model parameters.