We review gauge invariant [Formula: see text] supersymmetric massive U(1) gauge theory coupled to matter and Stuckelberg superfields. We focus on the leading order self-energy and vertex correction to the matter field in the massless limit of both the U(1) vector superfield and the Stuckelberg superfield. We explicitly verify that the theory is infrared divergence free in the massless limit. Hence the Stuckelberg mechanism appears to be the efficient route to handle infrared divergences seen in supersymmetric quantum electrodynamics. Since these additional particles have very small masses they can serve as dark matter candidates through “Ultralight particles” mechanism.

中文翻译：

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Stuckelberg SUSY QED 和红外问题

我们回顾了规范不变量 [公式：见正文] 耦合到物质和 Stuckelberg 超场的超对称大质量 U(1) 规范理论。我们专注于在 U(1) 矢量超场和 Stuckelberg 超场的无质量极限下对物质场的前序自能和顶点校正。我们明确地验证了该理论在无质量极限下是无红外发散的。因此，Stuckelberg 机制似乎是处理超对称量子电动力学中红外发散的有效途径。由于这些额外的粒子质量非常小，它们可以通过“超轻粒子”机制作为暗物质候选者。