Chenyang Li

TL;DR: It is found that the DSRG-MRPT2 can describe the potential energy curves of HF and N2, and the singlet-triplet gap of p-benzyne with an accuracy similar to that of other multireference perturbation theories.

TL;DR: Schriber and Evangelista as discussed by the authors combined adaptive configuration interaction (ACI) with a density-fitted implementation of the second-order perturbation (SOP) to achieve the desired performance.

TL;DR: Li et al. as discussed by the authors reported an efficient implementation of a second-order multireference perturbation theory based on the driven similarity renormalization group (DSRG-MRPT2).

TL;DR: The first nonperturbative version of the multireference driven similarity renormalization group (MR-DSRG) theory with one-and two-body operators was introduced in this paper.

TL;DR: A third-order multireference perturbation theory based on the driven similarity renormalization group (DSRG-MRPT3) approach is presented in this paper, which has several appealing features: (a) intruder free, (b) size consistent, (c) leading to a non-iterative algorithm with O(N6) scaling, and (d) it includes reference relaxation effects.