3 papers
physics.chem-ph2025
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…
physics.comp-ph2025
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…
physics.chem-ph2024
Striking the Right Balance of Encoding Electron Correlation in the Hamiltonian and the Wavefunction Ansatz
Kalman Szenes, Maximilian Moerchen, Paul Fischill +1
Multi-configurational electronic structure theory delivers the most versatile approximations to many-electron wavefunctions, flexible enough to deal with all sorts of transformatio…