5 papers
Portably parallel construction of a CI wave function from a matrix-product state using the Charm++ framework
Ting Wang, Yingjin Ma, Lian Zhao +1
The constructions of configuration interaction (CI) expansions from a matrix-product state (MPS) involves numerous matrix operations and the skillful sampling of important configur…
A Forecasting System of Computational Time of DFT/TDDFT Calculations under the Multiverse ansatz via Machine Learning and Cheminformatics
Shuo Ma, Yingjin Ma, Baohua Zhang +2
A top-level designed forecasting system for predicting computational times of density-functional theory (DFT)/time-dependent density-functional theory (TDDFT) calculations is prese…
Multi-Reference Epstein-Nesbet Perturbation Theory with Density Matrix Renormalization Group Reference Wavefunction
Yinxuan Song, Yifan Cheng, Yingjin Ma +1
The accurate electronic structure calculation for strongly correlated chemical systems requires an adequate description for both static and dynamic electron correlation, and is a p…
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…
Externally-Contracted Multi-Reference Configuration Interaction Method Using a DMRG Reference Wave Function
Zhen Luo, Yingjin Ma, Xicun Wang +1
The recent development of the density matrix renormalization group (DMRG) method in multireference quantum chemistry makes it practical to evaluate static correlation in a large ac…