58 citations · 151 across the 13 of their papers we have counts for
13 papers
Statistical inference of anomalous thermal transport with uncertainty quantification for interpretive 2-D SOL models
Yichen Fu, Ben Dudson, Xiao Chen +4
The critical task of inferring anomalous cross-field transport coefficients is addressed in simulations of boundary plasmas with fluid models. A workflow for parameter inference in…
Wave Topology in Hall MHD
Alejandro Mesa Dame, Hong Qin, Eric Palmerduca +1
Hall Magnetohydrodynamics (HMHD) extends ideal MHD by incorporating the Hall effect via the induction equation, making it more accurate for describing plasma behavior at length sca…
Energy-momentum-conserving stochastic differential equations and algorithms for nonlinear Landau-Fokker-Planck equation
Yichen Fu, Justin R. Angus, Hong Qin +1
Coulomb collision is a fundamental diffusion process in plasmas that can be described by the Landau-Fokker-Planck (LFP) equation or the stochastic differential equation (SDE). Whil…
Moment-preserving Monte-Carlo Coulomb collision method for particle codes
Justin Ray Angus, Yichen Fu, Vasily Geyko +2
Binary-pairing Monte-Carlo methods are widely used in particle-in-cell codes to capture effects of small angle Coulomb collisions. These methods preserve momentum and energy exactl…
Topological modes and spectral flows in inhomogeneous PT-symmetric continuous media
Yichen Fu, Hong Qin
In classical Hermitian continuous media, the spectral-flow index of topological modes is linked to the bulk topology via index theorem. However, the interface between two bulks is…
Spin Hall effect of radiofrequency waves in magnetized plasmas
Yichen Fu, I. Y. Dodin, Hong Qin
In inhomogeneous media, electromagnetic-wave rays deviate from the trajectories predicted by the leading-order geometrical optics. This effect, called the spin Hall effect of light…
Topological Langmuir-cyclotron wave
Hong Qin, Yichen Fu
A theoretical framework is developed to describe the Topological Langmuir-Cyclotron Wave (TLCW), a recently identified topological surface excitation in magnetized plasmas. As a to…
The dispersion and propagation of topological Langmuir-cyclotron waves in cold magnetized plasmas
Yichen Fu, Hong Qin
Topological Langmuir-Cyclotron Wave (TLCW) is a recently identified topological surface excitation in magnetized plasmas. We show that TLCW originates from the topological phase tr…
Topological phases and bulk-edge correspondence of magnetized cold plasmas
Yichen Fu, Hong Qin
Plasmas have been recently studied as topological materials. However, a comprehensive picture of topological phases and topological phase transitions in cold magnetized plasmas is…
Spontaneous and explicit parity-time-symmetry breaking in drift wave instabilities
Hong Qin, Yichen Fu, Alexander S. Glasser +1
A method of Parity-Time (PT)-symmetry analysis is introduced to study the high dimensional, complicated parameter space of drift wave instabilities. We show that spontaneous PT-sym…
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…
The Physics of Spontaneous Parity-Time Symmetry Breaking in the Kelvin-Helmholtz Instability
Yichen Fu, Hong Qin
We show that the dynamics, in particular the Kelvin-Helmholtz (KH) instability, of an inviscid fluid with velocity shear admits Parity-Time (PT) symmetry, which provides a physical…