Quartic scaling evaluation of canonical scaled opposite spin second-order Møller-Plesset correlation energy using Cholesky decompositions

A new quartic scaling formulation of the canonical SOS-MP2 method is presented which is considerably faster than previous algorithms. LaplaceCDTermOperation countTermOperation countX¯QOVM2tOVMm + OVMm2/2L¯QOVMZOVMmEQM2EMm