晶场中稀土离子光谱的Lorentz对称性破坏效应
Effects of Lorentz Symmetry Violation in the Spectra of Rare-Earth Ions in a Crystal Field
摘要：
我们表明，实验测量掺杂在晶格中的稀土离子的跃迁能量是敏感的局部洛伦兹不变性和爱因斯坦的等效原理的违反。以LaCl $_{3}$的晶场为例，在标准模型扩展的背景下，计算了Ce $^{3+}$，Nd $^{3+}$，Er $^{3+}$掺杂的低激发态之间的跃迁频率随坐标系变化的能量位移，并表明它们对破坏转动不变性的电子异常具有很高的灵敏度.
英文摘要：
We demonstrate that experiments measuring the transition energies of rare-earth ions doped in crystalline lattices are sensitive to violations of Local Lorentz Invariance and Einstein's Equivalence Principle. Using the crystal field of LaCl$_{3}$ as an example, we calculate the frame-dependent energy shifts of the transition frequencies between low-lying states of Ce$^{3+}$, Nd$^{3+}$, and Er$^{3+}$ dopants in the context of the Standard Model Extension, and show that they have high sensitivity to electron anomalies that break rotational invariance.
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