A violation of the distance-duality relation is directly linked with a temporal variation of the electromagnetic fine-structure constant. We consider a number of well-studied $f(T)$ gravity models and we revise the theoretical prediction of their corresponding induced violation of the distance-duality relationship. We further extract constraints on the involved model parameters through fine-structure constant variation data, alongside with supernovae data, and Hubble parameter measurements. Moreover, we constrain the evolution of the effective $f(T)$ gravitational constant. Finally, we compare with revised constraints on the phenomenological parametrisations of the violation of the equivalence principle in the electromagnetic sector.

中文翻译：

---

测试对电磁扇区等效原理的违反及其在 f(T) 引力中的后果

违反距离对偶关系与电磁精细结构常数的时间变化直接相关。我们考虑了许多经过充分研究的 $f(T)$ 重力模型，并修改了它们相应的诱导违反距离对偶关系的理论预测。我们通过精细结构的恒定变化数据、超新星数据和哈勃参数测量进一步提取对所涉及模型参数的约束。此外，我们限制了有效的 $f(T)$ 引力常数的演化。最后，我们与对违反电磁领域等效原理的现象学参数的修正约束进行比较。