We propose and demonstrate analytically, within the framework of a hydrodynamic model, a novel and simpler variational approach to study the asymptotic behavior of a continuous wave (cw) laser beam propagating in a nonlinear nonlocal medium.

中文翻译：

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研究非局部非线性介质中光传播的渐近变分方法

我们在流体动力学模型的框架内提出并分析证明了一种新颖且更简单的变分方法，用于研究在非线性非局部介质中传播的连续波 (cw) 激光束的渐近行为。