30 citations · 228 across the 45 of their papers we have counts for
6 papers · 1 filter
Regularization of Complex Langevin Method
Zhenning Cai, Yang Kuang, Hong Kiat Tan
The complex Langevin method, a numerical method used to compute the ensemble average with a complex partition function, often suffers from runaway instability. We study the regular…
Differential Equation Based Path Integral for System-Bath Dynamics
Geshuo Wang, Zhenning Cai
We propose the differential equation based path integral (DEBPI) method to simulate the real-time evolution of open quantum systems. In this method, a system of partial differentia…
An entropic method for discrete systems with Gibbs entropy
Zhenning Cai, Jingwei Hu, Yang Kuang +1
We consider general systems of ordinary differential equations with monotonic Gibbs entropy, and introduce an entropic scheme that simply imposes an entropy fix after every time st…
The Wigner Function of Ground State and One-Dimensional Numerics
Hongfei Zhan, Zhenning Cai, Guanghui Hu
In this paper, the ground state Wigner function of a many-body system is explored theoretically and numerically. First, an eigenvalue problem for Wigner function is derived based o…
Inclusion-Exclusion Principle for Open Quantum Systems with Bosonic Bath
Siyao Yang, Zhenning Cai, Jianfeng Lu
We present two fast algorithms which apply inclusion-exclusion principle to sum over the bosonic diagrams in bare diagrammatic quantum Monte Carlo (dQMC) and inchworm Monte Carlo m…
Numerical Solver for the Boltzmann Equation With Self-Adaptive Collision Operators
Zhenning Cai, Yanli Wang
We use the Burnett spectral method to solve the Boltzmann equation whose collision term is modeled by separate treatments for the low-frequency part and high-frequency part of the…