精细结构常数与适居行星
The Fine Structure Constant and Habitable Planets
摘要：
我们利用可居住行星的存在对精细结构常数$α$施加人为要求。为此，我们提出了两个考虑，限制其值非常接近观察到的。第一，恒星聚变的最终产物是铁，而不是它的邻近元素之一，这将$α^{-1}$限制为$145\pm 50$。第二，地球内部的放射性热在数十亿年内仍然具有足够的生产力，这将其限制为$145\pm9$。与大统一理论窗口的连接进行了讨论，有效地提供了一条路线，探测超高能物理与行星科学即将取得的进展。
英文摘要：
We use the existence of habitable planets to impose anthropic requirements on the fine structure constant, $α$. To this effect, we present two considerations that restrict its value to be very near the one observed. The first, that the end product of stellar fusion is iron and not one of its neighboring elements, restricts $α^{-1}$ to be $145\pm 50$. The second, that radiogenic heat in the Earth's interior remains adequately productive for billions of years, restricts it to be $145\pm9$. A connection with the grand unified theory window is discussed, effectively providing a route to probe ultra-high energy physics with upcoming advances in planetary science.
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