27 citations · 43 across the 3 of their papers we have counts for
3 papers · 1 filter
Robust approximation of tensor networks: application to grid-free tensor factorization of the Coulomb interaction
Karl Pierce, Varun Rishi, Edward F. Valeev
Approximation of a tensor network by approximating (e.g., factorizing) one or more of its constituent tensors can be improved by canceling the leading-order error due to the consti…
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…
Approximating electronically excited states with equation-of-motion linear coupled-cluster theory
Jason N. Byrd, Varun Rishi, Ajith Perera +1
A new perturbative approach to canonical equation-of-motion coupled-cluster theory is presented using coupled-cluster perturbation theory. A second-order Møller-Plesset partitionin…