论文标题
Bopp-Podolsky标量电动力传播器和协变量和轻正坐标中的能量量张量
Bopp-Podolsky Scalar Electrodynamics Propagators and Energy-Momentum Tensor in Covariant and Light-Front Coordinates
论文作者
论文摘要
我们考虑了带电的标量玻色子和Bopp-Podolsky仪表场之间的相互作用。 BOPP-Podolsky（BP）电动力学具有光子的巨大和无质量传播模式，同时保留了规格不变性。我们获得了模型中存在的所有场的传播器，用于线性协变量，轻正面和双重横向光仪表的高阶概括。尽管BP的原始模型由高级衍生物Lagrangian描述，但可以通过引入辅助矢量字段来处理等效降低的版本。我们计算全降级相互作用BP模型的量规不变的改进的能量量张量。除了更传统的前景视图外，我们还讨论了模型的两个版本中的光线视角。在Lagrangian框架方法中，我们在各个步骤中保持显式协方差，并表明现场传播器以及能量弹药张量可以使用一般坐标转换的特定属性将其施加到轻正面形式中。
We consider the interaction between a charged scalar boson and the Bopp-Podolsky gauge fields. The Bopp-Podolsky (BP) electrodynamics possesses both massive and massless propagation modes for the photon, while preserving gauge invariance. We obtain the propagator of all fields present in the model for the higher-order generalizations of the linear covariant, light-front and doubly transverse light-front gauges. Although BP's original model is described by a higher-order derivatives Lagrangian, it is possible to work with an equivalent reduced-order version by means of the introduction of an auxiliary vector field. We compute the gauge-invariant improved energy-momentum tensor for the full reduced-order interacting BP model. Besides the more traditional front-form view, we also discuss the light-front perspective in both versions of the model. Within a Lagrangian framework approach we maintain explicit covariance at all steps and show that the field propagators, as well as the energy-momentum tensor, can be cast into a light-front closed form using specific properties of general coordinate transformations.
