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二阶正修正伯格斯方程中的非局部能量耗散与拓扑障碍

Non-Local Energy Dissipation and Topological Obstructions in the Second-Order Positive Modified Burgers' Equation

Prasanta Chatterjee, Suman Pal

arXiv 2608.23126首次发表:更新:

AI 中文总结

该研究分析二阶正修正伯格斯方程的非局部积分微分流,发现其非局部耗散会打破能量平衡,导致孤波不稳定,无法形成稳定对称的行波。

AI 中文摘要

我们研究修正伯格斯方程通过其标准递归算子生成的高阶流,特别证明二阶正流呈现非局部积分微分方程形式。将方程约化为行波形式后,我们分析其渐近能量行为,结果显示非局部能通量阻止拓扑扭结和钟形孤波的形成。我们还表明,非局部耗散永久打破非线性对流与线性色散间的渐近平衡,造成不可逆能量失衡,分析进一步证实孤波不稳定,非局部项通过辐射引发持续能量损失,致使行波无法维持稳定对称形状。

英文摘要

We study the higher-order flows of the modified Burgers' equation generated by its standard recursion operator. In particular, we show that the second-order positive flow takes the form of a non-local integro-differential equation. After reducing the equation to a traveling-wave form, we investigate its asymptotic energy behavior. The resulting analysis shows that the non-local energy flux prevents the formation of both topological kink and bell-shaped solitary waves. We show that the non-local dissipation permanently breaks the asymptotic equilibrium between nonlinear convection and linear dispersion, forcing an irreversible energy imbalance. Our analysis shows that the solitary waves are unstable. The non-local term causes continuous energy loss through radiation. As a result, the traveling wave cannot keep a stable and symmetric shape.

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