用ELT测试精细结构常数稳定性的基本物理约束
Fundamental physics constraints from testing the stability of the fine-structure constant with the ELTs
摘要：
ELT收集面积的增加将使高分辨率超稳定光谱仪能够达到更暗的高z目标，从而实现新一代的精确一致性测试，包括测试自然基本耦合的稳定性。例如，精细结构常数的稳定性可以通过观察金属吸收线来测试，金属吸收线是由遥远类星体视线上的中间云产生的。在这篇文章中，我们讨论了ELT在测试精细结构常数的稳定性方面的预期性能，基于早期的ESTERO观测，以及这些测量对基础物理学和宇宙学的代表性模型的影响的一些比较预测。
英文摘要：
The increased collecting area of the ELTs will bring fainter high-z targets within the reach of high-resolution ultra-stable spectrographs, thus enabling a new generation of precision consistency tests, including tests of the stability of nature's fundamental couplings. For example, the stability of the fine-structure constant can be tested by looking at metal absorption lines produced by the intervening clouds along the line of sight of distant quasars. In this contribution, we discuss the performance that can be expected from the ELTs in testing the stability of the fine-structure constant, based on the early ESPRESSO observations, and some comparative forecasts of the impact of these measurements for representative models of fundamental physics and cosmology.
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