4 papers
Unit-Circle Moment Closure
Yu Su, Yao Wang
Moment closure is a central problem in reduced descriptions of stochastic, kinetic, and quantum dynamics, where equations for low-order observables are coupled to an unresolved hie…
Projection-Based Memory Kernel Coupling Theory for Quantum Dynamics: A Stable Framework for Non-Markovian Simulations
Wei Liu, Rui-Hao Bi, Yu Su +4
We present a projection-based, stability-preserving methodology for computing time correlation functions in open quantum systems governed by generalized quantum master equations wi…
Nonperturbative Open Quantum Dynamics Bypass Influence Functional
Yu Su, Yao Wang, Wenjie Dou
An ordered moment approach to exact open quantum dynamics is presented, which bypasses the Feynman-Vernon influence functional formalism. The hierarchical equations of motion are c…
Memory Kernel Coupling Theory: Obtain Time Correlation Function from Higher-order Moments
Wei Liu, Yu Su, Yao Wang +1
Dynamical observables can often be described by time correlation functions (TCFs). However, efficiently calculating TCFs for complex quantum systems is a significant challenge, whi…