LASSCF localize_init_guess can't always preserve an ROHF wave function. #45
Labels
convergence issues
The code has no trouble identifying the right answer, but has trouble getting to it
enhancement
New feature or request
If the number of active orbitals equals the number of singly-occupied orbitals of a ROHF reference wave function, then with the kwarg
freeze_cas_spaces=True
thelocalize_init_guess
function will ensure that the ROHF reference wave function exists within the initial guess orbital Hilbert space. However, if doubly-occupied or unoccupied orbitals are included in the active space, then the localization will deoptimize them even iffreeze_cas_spaces=True
and even if such orbitals are already highly localized (because they will always have at least some tail on atoms outside the fragment).The text was updated successfully, but these errors were encountered: