Measuring the stability of fundamental constants with a network of clocks

Measuring the stability of fundamental constants with a network of clocks
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使用时钟网络测量基本常数的稳定性

DOI:
10.1140/epjqt/s40507-022-00130-5
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发表时间:
2022
影响因子:
5.3
通讯作者:
Barontini G
Barontini G
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Barontini G

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对标准模型基本常数变化的探测将为我们提供新物理学的令人信服的证据,并可能揭开暗物质和暗能量本质的面纱。在这项工作中,我们将讨论如何使用原子和分子钟网络在广泛的时间尺度上以前所未有的灵敏度寻找这种变化。这正是最近启动的QSNET项目的目标:一个用于测量基本常数稳定性的时钟网络。QSNET将包括最先进的原子钟,但也将开发下一代分子和高电荷离子钟,对基本常数的变化具有更高的灵敏度。我们描述了QSNET的技术和科学目标,并评估其预期性能。我们表明,在QSNET探测的参数范围内,我们要么会发现新的物理,要么会对违反基本对称性和一系列超越标准模型的理论(包括暗物质和暗能量模型)施加新的约束。
The detection of variations of fundamental constants of the Standard Model would provide us with compelling evidence of new physics, and could lift the veil on the nature of dark matter and dark energy. In this work, we discuss how a network of atomic and molecular clocks can be used to look for such variations with unprecedented sensitivity over a wide range of time scales. This is precisely the goal of the recently launched QSNET project: A network of clocks for measuring the stability of fundamental constants. QSNET will include state-of-the-art atomic clocks, but will also develop next-generation molecular and highly charged ion clocks with enhanced sensitivity to variations of fundamental constants. We describe the technological and scientific aims of QSNET and evaluate its expected performance. We show that in the range of parameters probed by QSNET, either we will discover new physics, or we will impose new constraints on violations of fundamental symmetries and a range of theories beyond the Standard Model, including dark matter and dark energy models.
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