activity
20152026
most citedA route to improving RPA excitation energies through its connection to equation-of-motion coupled cluster theory

16 citations · 34 across the 6 of their papers we have counts for

collaborators

7 papers

physics.chem-ph2026

A note on the accuracy of spin-densities from Kohn-Sham Density Functional Theory

Rodrigo A. Mendes, Zachary W. Windom, Ajith Perera +2

Quantifying the magnetic properties of open-shell molecules is a common task in chemistry and is increasingly performed in silico using Kohn-Sham density functional theory (KS-DFT)…

physics.chem-ph2026

On the performance of QTP functionals applied to second-order response properties II: Dynamic polarizability and long-range C coefficients

Rodrigo A. Mendes, Peter R. Franke, Ajith Perera +1

This work is the second in the series "On the performance of QTP functionals applied to second-order response properties." In the first paper (J. Chem. Phys. 162, 054105, 2025), we…

physics.chem-ph2024

An "ultimate" coupled cluster method based entirely on

Zachary W. Windom, Ajith Perera, Rodney J. Bartlett

Electronic structure methods built around double-electron excitations have a rich history in quantum chemistry. However, it seems to be the case that such methods are only suitable…

physics.chem-ph2024★ 2 cited

An assessment of frozen natural orbitals and band gaps using equation of motion coupled cluster theory: a case study on polyacene and trans-polyacetylene

Zachary W. Windom, AV Lam, Ajith Perera +1

Frozen natural orbitals (FNOs) are used to augment IP/EA-EOM-CCSD calculations targeting the band gap of trans-polyacetylene and polyacene. We show the resulting electron affinitie…

physics.chem-ph2020★ 16 cited

A route to improving RPA excitation energies through its connection to equation-of-motion coupled cluster theory

Varun Rishi, Ajith Perera, Rodney J. Bartlett

We revisit the connection between equation-of-motion coupled cluster (EOM-CC) and random phase approximation (RPA) explored recently by Berkelbach [J. Chem. Phys. 149, 041103 (2018…

physics.chem-ph2016★ 16 cited

Predictive coupled-cluster isomer orderings for some SiC () clusters; A pragmatic comparison between DFT and complete basis limit coupled-cluster benchmarks

Jason N. Byrd, Jesse J. Lutz, Yifan Jin +7

The accurate determination of the preferred isomer is important to guide experimental efforts directed towards synthesizing SiC nano-wires and related p…