Diffusion Monte Carlo methods for Spin-Orbit-Coupled ultracold Bose gases
Abstract
We present two Diffusion Monte Carlo (DMC) algorithms for systems of ultracold quantum gases featuring synthetic spin-orbit interactions. The first one is a discrete spin generalization of the T- moves spin-orbit DMC, which provides an upper bound to the fixed-phase energy. The second is a spin-integrated DMC method which recovers the fixed-phase property by avoiding the definition of the effective Hamiltonian involved in the T-moves approach. The latter is a more accurate method but it is restricted to spin-independent two-body interactions. We report a comparison between both algorithms for different systems. As a check of the efficiency of both methods, we compare the DMC energies with results obtained with other numerical methods, finding agreement between both estimation
Cite
@article{arxiv.1807.08123,
title = {Diffusion Monte Carlo methods for Spin-Orbit-Coupled ultracold Bose gases},
author = {J. Sanchez-Baena and J. Boronat and F. Mazzanti},
journal= {arXiv preprint arXiv:1807.08123},
year = {2018}
}