4 papers
Efficient Implementation of the Spin-Free Renormalized Internally-Contracted Multireference Coupled Cluster Theory
Kalman Szenes, Riya Kayal, Kantharuban Sivalingam +3
In this paper, an efficient implementation of the renormalized internally-contracted multreference coupled cluster with singles and doubles (RIC-MRCCSD) into the ORCA quantum chemi…
QCMaquis 4.0: Multi-Purpose Electronic, Vibrational, and Vibronic Structure and Dynamics Calculations with the Density Matrix Renormalization Group
Kalman Szenes, Nina Glaser, Mihael Erakovic +6
QCMaquis is a quantum chemistry software package for general molecular structure calculations in a matrix product state/matrix product operator formalism of the density matrix reno…
Complete Active Space Iterative Coupled Cluster Theory
Robin Feldmann, Max Mörchen, Jakub Lang +2
In this work, we investigate the possibility of improving multireference-driven coupled cluster (CC) approaches with an algorithm that iteratively combines complete active space (C…
Renormalized Internally-Contracted Multireference Coupled Cluster with Perturbative Triples
Robin Feldmann, Markus Reiher
In this work, we combine the many-body formulation of the internally contracted multireference coupled cluster (ic-MRCC) method with Evangelista's multireference formulation of the…