Pyqcm · pyqcm-project bundle Assists with pyqcm, the Python/C++ library for quantum cluster methods (CPT, VCA, CDMFT) used to study strongly correlated electron models like the Hubbard model. Use this whenever the user is writing or debugging a pyqcm script (defining clusters, lattice models, operators, parameters, running model_instance calculations), interpreting pyqcm output (spectral functions, Green's functions, self-energy, order parameters, ground state averages, phase diagrams), or reading/modifying the pyqcm source itself (the src_ed exact-diagonalization solver, the src_qcm lattice/CPT-VCA-CDMFT engine, or the src_python nanobind bindings). Also trigger on mentions of cluster perturbation theory, exact diagonalization impurity solver, Lanczos, Lehmann representation, or the qcm_wed/pyqcm-project repository, even if the user doesn't say "pyqcm" by name.
