基本常数的宇宙学可变性测试
Testing cosmological variability of fundamental constants
摘要：
当代物理学的一个热门问题是基本常数的可能变异性。在这里，我们考虑两个无量纲常数的可能变化，这两个常数对于计算原子和分子光谱（特别是X射线光谱）是最重要的：精细结构常数α=e^2/ \hbar c和质子与电子的质量比μ=m_p/m_e。早期的物理常数值是直接从类星体的观测中估算出来的。类星体是最强大的辐射源，其光谱是在宇宙比现在年轻几倍的时候形成的。对现有结果的批判性分析得出的结论是，目前的数据并没有揭示任何统计学上显着的证据，基本常数的变化正在研究中。在我们的工作中获得的95%置信水平下可能变化率的最可靠上限为：|\dot α/α| <（1.4e-14）/年，|\dot μ/μ| <（1.5e-14）/年的平均值在过去的100亿年。
英文摘要：
One of the topical problems of contemporary physics is a possible variability of the fundamental constants. Here we consider possible variability of two dimensionless constants which are most important for calculation of atomic and molecular spectra (in particular, the X-ray ones): the fine-structure constant α=e^2/\hbar c and the proton-to-electron mass ratio μ=m_p/m_e. Values of the physical constants in the early epochs are estimated directly from observations of quasars - the most powerful sources of radiation, whose spectra were formed when the Universe was several times younger than now. A critical analysis of the available results leads to the conclusion that present-day data do not reveal any statistically significant evidence for variations of the fundamental constants under study. The most reliable upper limits to possible variation rates at the 95% confidence level, obtained in our work, read: |\dotα/α| < (1.4e-14)/yr, |\dotμ/μ| < (1.5e-14)/yr on the average over the last ten billion years.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
