电磁耦合的大质量自旋2场的内禀截断和双态性
Intrinsic Cutoff and Acausality for Massive Spin 2 Fields Coupled to Electromagnetism
摘要：
我们把一个自旋为2的大质量粒子和电磁场耦合起来。通过引入新的，冗余度的自由度使用的Stueckelberg形式主义，我们提取一个内在的，模型独立的UV截止的有效场论描述这个系统。截止信号的开始，一个强相互作用的动力学制度和一个有限的大小为自旋2粒子。我们表明，截止的存在是严格连接到相互作用的高自旋场，如Velo-Zwanziger非因果关系的其他病理。我们还简要地评论了这一结果的影响，为检测高自旋态和其可能的推广到任意自旋。
英文摘要：
We couple a massive spin 2 particle to electromagnetism. By introducing new, redundant degrees of freedom using the Stueckelberg formalism, we extract an intrinsic, model independent UV cutoff of the effective field theory describing this system. The cutoff signals both the onset of a strongly interacting dynamical regime and a finite size for the spin 2 particle. We show that the existence of a cutoff is strictly connected to other pathologies of interacting high-spin fields, such as the Velo-Zwanziger acausality. We also briefly comment on implications of this result for the detection of high spin states and on its possible generalization to arbitrary spin.
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