40 citations · 178 across the 12 of their papers we have counts for
12 papers
Chemical Potentials and the One-Electron Hamiltonian of the Second-Order Perturbation Theory from the Functional Derivative Approach
Jiachen Li, Weitao Yang
We develop a functional derivative approach to calculate the chemical potentials of the second-order perturbation theory (MP2). In the functional derivative approach, the correlati…
Accurate Excitation Energies of Point Defects from Fast Particle-Particle Random Approximation Calculations
Jiachen Li, Yu Jin, Jincheng Yu +2
We present an efficient particle-particle random phase approximation (ppRPA) approach that predicts accurate excitation energies of point defects, including the nitrogen-vacancy (N…
Machine Learning Many-Body Green's Functions for Molecular Excitation Spectra
Christian Venturella, Christopher Hillenbrand, Jiachen Li +1
We present a machine learning (ML) framework for predicting Green's functions of molecular systems, from which photoemission spectra and quasiparticle energies at quantum many-body…
Linear Scaling Calculations of Excitation Energies with Active-Space Particle-Particle Random Phase Approximation
Jiachen Li, Jincheng Yu, Zehua Chen +1
We developed an efficient active-space particle-particle random phase approximation (ppRPA) approach to calculate accurate charge-neutral excitation energies of molecular systems.…
Dynamical quantum phase transitions in SYK Lindbladians
Kohei Kawabata, Anish Kulkarni, Jiachen Li +2
We study the open quantum dynamics of the Sachdev-Ye-Kitaev (SYK) model described by the Lindblad master equation, where the SYK model is coupled to Markovian reservoirs with jump…
Renormalized Singles with Correlation in Green's Function Theory for Accurate Quasiparticle Energies
Jiachen Li, Weitao Yang
We apply the renormalized singles with correlation (RSc) Green's function in the approximation to calculate accurate quasiparticle (QP) energies and orbitals. The RSc Green's…
Combining Localized Orbital Scaling Correction and Bethe-Salpeter Equation for Accurate Excitation Energies
Jiachen Li, Ye Jin, Neil Qiang Su +1
We applied localized orbital scaling correction (LOSC) in Bethe-Salpeter equation (BSE) to predict accurate excitation energies for molecules. LOSC systematically eliminates the de…
Benchmark of Methods for Core-Level Binding Energies
Jiachen Li, Ye Jin, Patrick Rinke +2
The approximation has recently gained increasing attention as a viable method for the computation of deep core-level binding energies as measured by X-ray photoelectron spectr…
Combining Renormalized Singles Methods with the Bethe-Salpeter Equation for Accurate Neutral Excitation Energies
Jiachen Li, Dorothea Golze, Weitao Yang
We apply the renormalized singles (RS) Green's function in the Bethe-Salpeter equation (BSE)/ approach to predict accurate neutral excitation energies of molecular systems. The…
Multireference Density Functional Theory for Describing Ground and Excited States with Renormalized Singles
Jiachen Li, Zehua Chen, Weitao Yang
We applied renormalized singles (RS) in the multireference density functional theory (DFT) to calculate accurate energies of ground and excited states. The multireference DFT appro…
Renormalized Singles Green's Function in the T-Matrix Approximation for Accurate Quasiparticle Energy Calculation
Jiachen Li, Zehua Chen, Weitao Yang
We combine the renormalized singles (RS) Green's function with the T-Matrix approximation for the single-particle Green's function to compute quasiparticle energies for valence and…
Spectral Statistics of Non-Hermitian Matrices and Dissipative Quantum Chaos
Jiachen Li, Tomaž Prosen, Amos Chan
We propose a measure, which we call the dissipative spectral form factor (DSFF), to characterize the spectral statistics of non-Hermitian (and non-Unitary) matrices. We show that D…