SmoQyDEAC.jl: A differential evolution package for the analytic continuation of imaginary time correlation functions

Neuhaus, James; Nichols, Nathan S.; Banerjee, Debshikha; Cohen-Stead, Benjamin; Maier, Thomas A.; Del Maestro, Adrian; Johnston, Steven

doi:10.21468/scipostphyscodeb.39

Title: SmoQyDEAC.jl: A differential evolution package for the analytic continuation of imaginary time correlation functions

Journal Article · 11 November 2024 · SciPost Physics Codebases

DOI: https://doi.org/10.21468/scipostphyscodeb.39 · OSTI ID:2477071

^[1]; Nichols, Nathan S. ^[2]; Banerjee, Debshikha ^[1];

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University of Tennessee, Knoxville, TN (United States)
Argonne National Laboratory (ANL), Argonne, IL (United States)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

We introduce the SmoQyDEAC.jl package, a Julia implementation of the Differential Evolution Analytic Continuation (DEAC) algorithm [N. S. Nichols et al., Phys. Rev. E 106, 025312 (2022)] for analytically continuing noisy imaginary time correlation functions to the real frequency axis. Our implementation supports fermionic and bosonic correlation functions on either the imaginary time or Matsubara frequency axes, and treatment of the covariance error in the input data. This paper presents an overview of the DEAC algorithm and the features implemented in the SmoQyDEAC.jl package. It also provides detailed benchmarks of the package's output against the popular maximum entropy and stochastic analytic continuation methods.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); University of Tennessee, Knoxville, TN (United States)

Sponsoring Organization:: USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)

Grant/Contract Number:: AC02-06CH11357; AC05-00OR22725; SC0022311

OSTI ID:: 2477071

Journal Information:: SciPost Physics Codebases, Journal Name: SciPost Physics Codebases Vol. 39; ISSN 2949-804X

Publisher:: SciPost FoundationCopyright Statement

Country of Publication:: United States

Language:: English

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