论文标题

较高衍生化的阿贝尔仪表田理论的稳定性

Stability in the higher derivative Abelian gauge field theory

论文作者

Dai, Jialiang

论文摘要

我们介绍了较高导数的麦克斯韦·阿贝尔仪表理论中与高阶对称性相关的保守张量的推导。在我们的模型中,较高得出的理论的波动运算符是按通常的麦克斯韦操作员表示的$ n $ ther阶多项式。主波操作员的任何对称性都会引起场方程的独立高阶对称性的集合,从而导致一系列独立的保守量的派生系统。特别是,通过扩展Noether定理,麦克斯韦主要操作员的时空翻译不变性会导致一系列保守的第二级张量,其中包括标准的规范能量弹药张量。尽管通过引入一组参数,该规范能量是从下面的,但系列中的其他保守张量可以界定,从而确保较高的导数动力学的稳定性。此外,借助辅助磁场,我们成功地获得了波算子的特征多项式的根部分解与在另一种等效的下阶表示的背景下,在辅助磁场上的关系分解与保守的能量弹药张量。在某些条件下,这些保守数量的线性组合的00组分是有限的,因此,原始派生的理论被认为是稳定的。最后,作为一个有启发性的例子,我们讨论了三阶派生系统,并在不同的根部分解情况下广泛分析了稳定性。

We present the derivation of conserved tensors associated to higher-order symmetries in the higher derivative Maxwell Abelian gauge field theories. In our model, the wave operator of the higher derived theory is a $n$-th order polynomial expressed in terms of the usual Maxwell operator. Any symmetry of the primary wave operator gives rise to a collection of independent higher-order symmetries of the field equations which thus leads to a series of independent conserved quantities of derived system. In particular, by the extension of Noether's theorem, the spacetime translation invariance of the Maxwell primary operator results in the series of conserved second-rank tensors which includes the standard canonical energy-momentum tensors. Although this canonical energy is unbounded from below, by introducing a set of parameters, the other conserved tensors in the series can be bounded which ensure the stability of the higher derivative dynamics. In addition, with the aid of auxiliary fields, we successfully obtain the relations between the roots decomposition of characteristic polynomial of the wave operator and the conserved energy-momentum tensors within the context of another equivalent lower-order representation. Under the certain conditions, the 00-component of the linear combination of these conserved quantities is bounded and by this reason, the original derived theory is considered stable. Finally, as an instructive example, we discuss the third-order derived system and analyze extensively the stabilities in different cases of roots decomposition.

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