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arXiv · 2512.17269

Asymptotic state of nonlinear Landau damping in one-dimensional plasma

Yifei Ouyang·Ping Zhu·Chung-Sang Ng
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Abstract

In this work, the asymptotic state of nonlinear Landau damping in one-dimensional plasma has been examined using a quasi-linear model and a second-order symplectic integrator. The dispersion relation of the plateau distribution function for the steady-state solution of the quasi-linear mode is extended to the complex plane and compared with the nonlinear simulation. We determine that the asymptotic state of the collisionless plasma is a multi-wave BGK structure. This structure is characterized by multiple vortices in phase space, which correspond to distinct peaks in the frequency-wavenumber ({\omega}, k) spectrum of the electric field

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Yifei Ouyang, Ping Zhu, Chung-Sang Ng. 2025-12-19. Asymptotic state of nonlinear Landau damping in one-dimensional plasma. https://arxiv.org/abs/2512.17269

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