环境解耦：调和Ia型超新星时间膨胀与α的零变化
Environmental Decoupling: Reconciling SNe Ia Time Dilation with Null Variations of $α$
AI总结：
该研究通过环境屏蔽原理调和Ia型超新星时间膨胀与α零变化的矛盾，揭示局部度规与背景宇宙时间的解耦机制。
摘要：
广义宇宙时间（GCT）框架将观测到的Ia型超新星（SNe Ia）时间膨胀解释为背景度规中的广义 lapse 函数的表现，倾向于参数值 b ≈ 0.04。然而，通过碱性双重线（AD）和多倍线（MM）方法对精细结构常数 α 的精密光谱测量主要得出零结果。在本工作中，我证明这种矛盾不是灵敏度限制，而是区分全局坐标时间和局部 proper 时间的根本物理结果。通过反转 GCT 缩放关系，我建立光谱数据限制有效参数为 |b_local| ≲ 10^{-5}，揭示了与背景值相比三个数量级的张力。我通过引入环境屏蔽原理来解决这一问题。我论证致密、virialized 气体云维持一个静态的局部度规，动态上与背景宇宙时间流解耦，严格类似于束缚系统脱离哈勃膨胀的分离。因此，原子光谱探测一个被屏蔽的局部框架，其中物理常数保持不变，而 SNe Ia 观测测量光子穿越膨胀背景时积累的几何时间膨胀。该框架在不修改局部物理定律的情况下，调和了几何探测器的正膨胀信号与局部束缚系统中基本常数的稳定性。
英文摘要：
The Generalized Cosmological Time (GCT) framework interprets the observed time dilation in Type Ia supernovae (SNe Ia) as a manifestation of a generalized lapse function in the background metric, favoring a parameter value b \approx 0.04. However, precision spectroscopic measurements of the fine-structure constant αvia the alkali doublet (AD) and many-multiplet (MM) methods predominantly yield null results. In this work, I demonstrate that this discrepancy is not a sensitivity limitation but a fundamental physical consequence of distinguishing between global coordinate time and local proper time. By inverting the GCT scaling relations, I establish that spectroscopic data constrain the effective parameter to |b_{\text{local}}| \lesssim 10^{-5}, revealing a tension of three orders of magnitude against the background value. I resolve this by invoking the principle of environmental shielding. I argue that dense, virialized gas clouds maintain a static local metric that is dynamically decoupled from the background cosmological time flow, strictly analogous to the detachment of bound systems from the Hubble expansion. Consequently, atomic spectra probe a shielded local frame where physical constants remain invariant, whereas SNe Ia observations measure the accumulated geometric time dilation of photons traversing the expanding background. This framework reconciles the positive dilation signals in geometric probes with the stability of fundamental constants in local bound systems without modifying local physical laws.
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