3 papers
physics.chem-ph2025
Stochastic resolution of identity to CC2 for large systems: Excited-state gradients and derivative couplings
Chongxiao Zhao, Chenyang Li, Wenjie Dou
Excited-state gradients and derivative couplings are critical for simulating excited-state dynamics. However, their calculations are very expensive within the coupled-cluster frame…
physics.chem-ph2025
Stochastic resolution of identity to CC2 for large systems: Oscillator strength and ground state gradient calculations
Chongxiao Zhao, Qi Ou, Chenyang Li +1
An implementation of stochastic resolution of identity (sRI) approximation to CC2 oscillator strengths as well as ground state analytical gradients is presented. The essential 4-in…
physics.chem-ph2025
Driven similarity renormalization group with a large active space: Applications to oligoacenes, zeaxanthin, and chromium dimer
Chenyang Li, Xiaoxue Wang, Huanchen Zhai +1
We present a new implementation of the driven similarity renormalization group (DSRG) based on a density matrix renormalization group (DMRG) reference. The explicit build of high-o…