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physics.chem-ph2022
Active Spaces and Non-Orthogonal Configuration Interaction Approaches for Investigating Molecules on Metal Surfaces
Junhan Chen, Wenjie Dou, Joseph Subotnik
We test a set of multiconfigurational wavefunction approaches for calculating the ground state electron population for a two-site Anderson model representing a molecule on a metal…
physics.chem-ph2022★ 10 cited
On the Meaning of Berry Force For Unrestricted Systems Treated With Mean-Field Electronic Structure
Xuezhi Bian, Tian Qiu, Junhan Chen +1
We show that the Berry force as computed by an approximate, mean-field electronic structure can be meaningful if properly interpreted. In particular, for a model Hamiltonian repres…