利用Mori-Zwanzig形式推导磁性斯格明子的Thiele方程
Derivation of the Thiele equation for magnetic skyrmions using the Mori-Zwanzig formalism
- Institut für Physik, Johannes Gutenberg-Universität Mainz(美因茨约翰内斯·古腾堡大学物理研究所)
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中文总结 AI 辅助
利用Mori-Zwanzig形式推导出磁性斯格明子的精确广义Langevin方程,并证明其可简化为标准Thiele方程,为扩展Thiele方程及理解其微观基础提供了通用途径。
中文摘要 AI 辅助
我们利用Mori-Zwanzig形式推导出控制磁性斯格明子动力学的精确广义Langevin方程。通过标准近似,发现该广义Langevin方程可简化为通常的Thiele方程。我们的方法为获得适用于标准推导路径未涵盖的磁性纹理和自由度的Thiele方程扩展提供了一条通用途径。同时,它也为标准Thiele方程的微观证明提供了一些见解,特别是关于快速模式对斯格明子Fokker-Planck方程中漂移项和扩散项形式的贡献。
英文摘要
We use the Mori-Zwanzig formalism to derive an exact generalized Langevin equation governing the dynamics of magnetic skyrmions. Using standard approximations, this generalized Langevin equation is found to reduce to the usual Thiele equation. Our approach provides a general route for obtaining extensions of the Thiele equation applicable to magnetic textures and degrees of freedom not covered by the standard derivation route. It also provides some insights into the microscopic justification of the standard Thiele equation, specifically concerning contributions of fast modes to the form of the drift and diffusion terms in the Fokker-Planck equation for skyrmions.