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Local random phase approximation with projected oscillator orbitals
Bastien Mussard, Janos Angyan
An approximation to the many-body London dispersion energy in molecular systems is expressed as a functional of the occupied orbitals only. The method is based on the local-RPA the…
Spin-unrestricted random-phase approximation with range separation: Benchmark on atomization energies and reaction barrier heights
Bastien Mussard, Peter Reinhardt, Janos Angyan +1
We consider several spin-unrestricted random-phase approximation (RPA) variants for calculating correlation energies, with and without range separation, and test them on datasets o…
Analytical Energy Gradients in Range-Separated Hybrid Density Functional Theory with Random Phase Approximation
Bastien Mussard, Peter G. Szalay, János G. Ángyán
Analytical forces have been derived in the Lagrangian framework for several random phase approximation (RPA) correlated total energy methods based on the range separated hybrid (RS…