标题： 零平面上的降阶Bopp-Podolsky模型 显示英文标题

标题： Reduced-order Bopp-Podolsky model on the null-plane

摘要： 我们研究了高阶导数Bopp-Podolsky广义电动力学模型的降阶版本的零平面动力学。 通过引入一个辅助矢量场，我们得到了一个具有较低导数的更简单的等价形式。 Podolsky规范场的有质量模式和无质量模式被分为两个扇区。 我们用光前沿坐标描述该模型，并选择$x^+$作为自然演化参数，进而对其零平面动力学进行分析，得到整个约束结构和正则场方程。 在对约束进行适当的重新定义后，我们计算了第二类约束对应的Dirac括号。 规范不变性得以保持，在消除了第二类约束后，我们得到了一个关于降阶Bopp-Podolsky模型的一致阿贝尔第一类理论。 显示英文摘要

摘要： We consider the null-plane dynamics for a reduced-order version of the higher-derivatives Bopp-Podoslky generalized electrodynamics model. By introducing an auxiliary vector field, we achieve a simpler equivalent version with lower derivatives. The massive and massless modes for the Podolsky gauge field get split into two sectors. We describe the model in terms of light-front coordinates and, by choosing $x^+$ as a natural evolution parameter, proceed to its null-plane dynamics analysis obtaining the whole constraints structure and canonical field equations. After a convenient constraints redefinition, we calculate the Dirac brackets corresponding to the second-class sector. Gauge invariance is preserved and, after elimination of second-class constraints, we obtain a consistent Abelian first-class theory for the reduced-order Bopp-Podolsky model.