SmoQyDEAC.jl: an analytic continuation package for Matsubara correlation functions

Quantum Monte Carlo (QMC) methods allow physicists to measure the imaginary-time correlation functions for interacting systems. Due to causality requirements, these functions are analytic in the upper half of the complex plane. This allows for the analytic continuation (AC) of measured correlation functions to the real axis, allowing for comparison against experiment. However, QMC correlation function measurements are typically noisy and restricted to a grid of discrete imaginary times, resulting in AC being an ill-posed problem in practice. Here we introduce SmoQyDEAC.jl, a stand-alone Julia package in the SmoQySuite organization that implements the recently developed Differential Evolution for Analytic Continuation (DEAC) algorithm. This package adheres to the SmoQySuite design philosophy, being simple to install, easy to run, and with output which is easily post-processed. We provide an overview of the DEAC algorithm, then introduce SmoQyDEAC.jl scripting interface, and finally present benchmark results for both fermions and bosons, comparing against other common AC methods.