Developing effective electronic-only coupled-cluster and Møller–Plesset perturbation theories for the muonic molecules

The coupled-cluster and the second order Møller–Plesset perturbation theories are extended within the context of the effective muon-specific electronic structure theory and applied computationally to the muoniated N-heterocyclic carbene/silylene/germylene and the muoniated triazolium cation.