滚动标量场宇宙学中一个新的实质性质子电子质量比约束
A new substantive proton to electron mass ratio constraint on rolling scalar field cosmologies
摘要：
新的PKS 1830 -211射频观测甲醇的红移为0.88582已经建立了最严格的限制变化的质子电子质量比μ日期。观测结果给出的极限为（delta mu）/mu </=（0.0 +/- 1.0）x 10^{-7}，这比之前的最低极限0.6742低了大约四倍。这个严格的限制在大约是宇宙年龄一半的回顾时间，对滚动标量场宇宙学和它们所需要的新物理学有着深远的影响。这些宇宙学中的许多都调用了一个标量场，它也与电磁场耦合，导致基本常数μ和精细结构常数α随时间滚动。如果最低期望值的耦合到μ，zeta_{mu} $被调用的新的限制需要限制的暗能量状态方程参数w，使w+1 </= 0.001在红移为0.88582。这消除了几乎所有的预期参数空间，这样的宇宙学和新的物理学，有一个耦合到电磁场。在这些情况下，这个极限要求在宇宙年龄的后半部分w必须非常接近-1，或者滚动标量场与μ和电磁场的耦合必须显著低于或处于其预期范围的极限。新的观测结果巩固了基本常数在探索可能的宇宙学和新物理学以解释宇宙加速膨胀方面的作用。
英文摘要：
New PKS1830-211 radio frequency observations of methanol at a redshift of 0.88582 have established the most stringent limits on changes in the proton to electron mass ratio mu to date. The observations place the limit of (delta mu)/mu </= (0.0 +/- 1.0) x 10^{-7} which is approximately a factor of four lower than the previous lowest limit at a redshift of 0.6742. This stringent limit at a look back time of roughly half the age of the universe has profound implications for rolling scalar field cosmologies and the new physics that they require. Many of these cosmologies invoke a scalar field phi that is also coupled to the electromagnetic field causing the values of the fundamental constants, mu and the fine structure constant alpha to roll with time. If the lowest expected value of the coupling to mu, zeta_{mu}$ is invoked the new limit requires a limit on the dark energy equation of state parameter w such that w+1 </= 0.001 at a redshift of 0.88582. This eliminates almost all of the expected parameter space for such cosmologies and new physics that have a coupling to the electromagnetic field. In these cases the limit requires that w must be extremely close to -1 for the last half of the age of the universe or that the coupling of the rolling scalar field to mu and the electromagnetic field be significantly below or at the limit of its expected range. The new observations solidify the role of fundamental constants in providing probes of the possible cosmologies and new physics to explain the acceleration of the expansion of the universe.
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。
