We present an extension of Cluster Perturbation Theory to include many body correlations associated to local e-e repulsion in real materials. We show that this approach can describe the physics of complex correlated materials where different atomic species and different orbitals coexist. The prototypical case of MnO is considered.
@article{arxiv.1306.5231,
title = {Multi-orbital Cluster Perturbation Theory for transition metal oxides},
author = {F. Manghi},
journal= {arXiv preprint arXiv:1306.5231},
year = {2013}
}