发表机构
Albert-Ludwigs-Universität Freiburg; Sorbonne Université（弗莱堡大学; 索邦大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文发现准近轴光流体中自旋轨道相互作用自洽产生有效规范场，产生洛伦兹力并导致手性变形与自旋霍尔效应，以及波包进动。
AI 中文摘要
我们证明，在非线性Kerr介质中传播的准近轴光流体，自然经历一个由麦克斯韦方程组中编码的光的内在自旋轨道相互作用产生的有效规范场。通过推导控制流体演化的非线性薛定谔方程的前导非近轴修正，我们发现，对于圆偏振光束，这些修正产生一个有效洛伦兹力，从而改变流体动力学。值得注意的是，相应的规范场并非外部施加，而是由流体自身自洽地产生，其符号由光的手性控制，其大小由非线性折射率的空间变化决定。我们在两种构型中说明了该规范场的物理后果：正常流和超流绕过障碍物时的手性变形，伴随横向自旋霍尔力，以及聚焦流体中俘获的光波包的累积进动。
英文摘要
We show that quasi-paraxial fluids of light propagating in nonlinear Kerr media naturally experience an effective gauge field arising from the intrinsic spin-orbit interaction of light encoded in Maxwell equations. By deriving the leading nonparaxial corrections to the nonlinear Schrödinger equation governing the fluid evolution, we find that, for circularly polarized beams, these corrections generate an effective Lorentz force that modifies the fluid dynamics. Remarkably, the corresponding gauge field is not externally imposed but self-consistently generated by the fluid itself, with its sign controlled by the light helicity and its magnitude governed by the spatial variations of the nonlinear refractive index. We illustrate the physical consequences of this gauge field in two configurations: the chiral deformation of normal and superfluid flows past an obstacle, accompanied by a transverse spin Hall force, and the cumulative precession of an optical wave packet trapped in a focusing fluid.
