120 citations · 464 across the 13 of their papers we have counts for
6 papers · 1 filter
A quantum chemistry dataset containing S0-S1 conical-intersection structures of 259k molecules
Jiahui Zhang, Yifei Zhu, Chuqiao Feng +3
Conical intersections are key to photoinduced reactions, but comprehensive datasets of their structures remain rare. To address this gap, we built the QCDGE-CI dataset, which conta…
Approximate analytical gradients and nonadiabatic couplings for the state-average density matrix renormalization group self-consistent field method
Leon Freitag, Yingjin Ma, Alberto Baiardi +2
We present an approximate scheme for analytical gradients and nonadiabatic couplings for calculating state-average density matrix renormalization group self-consistent-field wavefu…
Second-Order Self-Consistent-Field Density-Matrix Renormalization Group
Yingjin Ma, Stefan Knecht, Sebastian Keller +1
We present a matrix-product state (MPS)-based quadratically convergent density-matrix renormalization group self-consistent-field (DMRG-SCF) approach. Following a proposal by Werne…
New Approaches for ab initio Calculations of Molecules with Strong Electron Correlation
Stefan Knecht, Erik Donovan Hedegård, Sebastian Keller +5
Reliable quantum chemical methods for the description of molecules with dense-lying frontier orbitals are needed in the context of many chemical compounds and reactions. Here, we r…
Self-Consistent Embedding of Density-Matrix Renormalization Group Wavefunctions in a Density Functional Environment
Thomas Dresselhaus, Johannes Neugebauer, Stefan Knecht +3
We present the first implementation of a density matrix renormalization group algorithm embedded in an environment described by density functional theory. The frozen density embedd…
Calculating excited states of molecular aggregates by the renormalized excitonic method
Yingjin Ma, Haibo Ma
In this paper, we apply the recently developed ab initio renormalized excitonic method (REM) to the excitation energy calculations of various molecular aggregates, through the exte…