24 citations · 24 across the 1 of their papers we have counts for
4 papers
Phantom Bethe roots in the integrable open spin chain
Xin Zhang, Andreas Klümper, Vladislav Popkov
We investigate special solutions to the Bethe Ansatz equations (BAE) for open integrable Heisenberg spin chains containing phantom (infinite) Bethe roots. The phantom Bethe r…
Phantom Bethe excitations and spin helix eigenstates in integrable periodic and open spin chains
Vladislav Popkov, Xin Zhang, Andreas Klümper
We demonstrate the existence of special phantom excitations for open and periodically closed integrable systems at the example of the Heisenberg spin chain. The phantom excit…
An Explicitly Solvable Energy-Conserving Algorithm for Pitch-Angle Scattering in Magnetized Plasmas
Yichen Fu, Xin Zhang, Hong Qin
We develop an Explicitly Solvable Energy-Conserving (ESEC) algorithm for the Stochastic Differential Equation (SDE) describing the pitch-angle scattering process in magnetized plas…
Simulating Pitch Angle Scattering Using An Explicitly Solvable Energy Conserving Algorithm
Xin Zhang, Yichen Fu, Hong Qin
Particle distribution functions evolving under the Lorentz operator can be simulated with the Langevin equation for pitch angle scattering. This approach is frequently used in part…