2017/09/30 by Kai Guther, Werner Dobrautz, O. Gunnarsson +2 · 24 citations
Mathematics · Physics and Astronomy · #Ab initio #Analytic continuation #Applied mathematics #Computational physics #Computer science #Embedding #Geometry #Ground state #Mathematical analysis #Mathematical optimization #Mathematics #Monte Carlo method #Physics #Physics of Superconductivity and Magnetism #Plane (geometry) #Quantum #Quantum Monte Carlo #Quantum and electron transport phenomena #Quantum many-body systems #Quantum mechanics #Realization (probability) #Solver #Statistical physics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.121.056401
published in Physical Review Letters 121(5), 056401 (American Physical Society) · 14 pages, 12 figures
openalex publication_date 2018/08/03 · arxiv created 2018/08/06 · arxiv updated 2018/08/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present a stochastic method for solving the time-dependent Schrödinger equation, generalizing a ground state full configuration interaction quantum Monte Carlo method. By performing the time integration in the complex plane close to the real-time axis, the numerical effort is kept manageable and the analytic continuation to real frequencies is efficient. This allows us to perform ab initio calculation of electron spectra for strongly correlated systems. The method can be used as a cluster solver for embedding schemes.