Paper: Multireference Approaches for Excited States

We just published a comprehensive and quite voluminous review paper about “Multireference Approaches for Excited States of Molecules”  in Chemical Reviews. The paper covers the major methods used nowadays, such as CASSCF, multireference (MR) configuration interaction, MR perturbation theory, and MR coupled cluster. It discusses the application of semiempirical Hamiltonians as well as connections to DFT. The emerging algorithms DMRG and full-CI Quantum Monte Carlo are included as well. The theory of gradients as well as MR diagnostics and wavefunction analysis are discussed. The presented applications include a variety of cases starting from diatomics and going to complexes and dimers.

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