Quantum Monte Carlo-based density functional for one-dimensional Bose-Bose mixtures
Quantum Monte Carlo-based density functional for one-dimensional Bose-Bose mixtures
We propose and benchmark a Gross-Pitaevskii-like equation for two-component Bose mixtures with competing interactions in 1D. Our approach follows the density-functional theory with the energy functional based on the exact Quantum Monte Carlo (QMC) simulations. Our model covers, but goes beyond, the popular approach with the Lee-Huang-Yang corrections. We first …