High-fidelity contact pseudopotentials and p-wave superconductivity
@inproceedings{Bugnion2014HighfidelityCP,
title={High-fidelity contact pseudopotentials and p-wave superconductivity},
author={P. O. Bugnion and Richard J. Needs and Gareth John Conduit},
year={2014}
}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…
