High-fidelity contact pseudopotentials and p-wave superconductivity
Quantum Gases
2014-03-04 v1 Materials Science
Strongly Correlated Electrons
Abstract
We develop ultratransferable pseudopotentials for the contact interaction that are 100 times more accurate than contemporary approximations. The pseudopotential offers scattering properties very similar to the contact potential, has a smooth profile to accelerate numerics by a factor of up to 4,000, and, for positive scattering lengths, does not support an unwanted bound state. We demonstrate these advantages in a Diffusion Monte Carlo study of fermions with repulsive interactions, delivering the first numerical evidence for the formation of a p-wave superconducting state.
Keywords
Cite
@article{arxiv.1403.0047,
title = {High-fidelity contact pseudopotentials and p-wave superconductivity},
author = {Pascal O. Bugnion and Richard J. Needs and Gareth J. Conduit},
journal= {arXiv preprint arXiv:1403.0047},
year = {2014}
}