标题： 解开宇宙常数之谜：时空不确定性是否是关键？ 显示英文标题

标题： Unraveling the mystery of the cosmological constant: Does spacetime uncertainty hold the key?

摘要： 在解决宇宙常数问题时，我们提出理论值与观测值之间的差异可以归因于时空度规的固有不确定性。 马赫原理认为质量塑造时空，这与量子力学将粒子描述为量子云的描述相交，使得粒子质量的确切位置无法知晓。 因此，理解量子层面的时空结构变得模糊。 量子与时空不确定性的这种联系可能正是解决宇宙常数问题的关键。 有趣的是，时空不确定性的长度尺度与近期实验中观察到的宏观量子怪异性一致。 时空不确定性可以通过弗里德曼-勒梅特-罗伯逊-沃尔克（FLRW）宇宙中的标度因子来量化。 显示英文摘要

摘要： In addressing the cosmological constant problem, we propose that the discrepancy between the theoretical and observed values can be ascribed to the inherent uncertainty in the spacetime metric. Mach's principle, which posits that mass shapes spacetime, intersects with quantum mechanics' description of a particle as a quantum cloud, rendering the precise location of a particle's mass unknowable. Consequently, understanding spacetime structure at the quantum level becomes elusive. This connection between quantum and spacetime uncertainty could hold the key to resolving the cosmological constant problem. Intriguingly, the length scale of spacetime uncertainty, aligns with the macroscopic quantum weirdness observed in recent experiments. The spacetime uncertainty can be quantified by the scale factor in the Friedmann-Lemaitre-Robertson-Walker (FLRW) universe.