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arXiv 1503.01213physics.atom-phgr-qc
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在甚大基线原子干涉仪中检验铷、镱自由降落的普适性

Testing the universality of free fall with rubidium and ytterbium in a very large baseline atom interferometer

Jonas Hartwig, Sven Abend, Christian Schubert, Dennis Schlippert, Holger Ahlers, Katerine Posso-Trujillo, Naceur Gaaloul, Wolfgang Ertmer, Ernst M. Rasel

摘要:

我们提出了一个很长的基线原子干涉仪测试爱因斯坦等效原理(EEP)与镱和铷延伸超过10米的自由降落。考虑到EEP违反的现有参数化,通过比较具有高原子序数的两种元素,相对于其他执行或提议的测试,这种测试质量的选择显著地拓宽了原子干涉EEP测试的范围。在第一步中,我们的实验方案将允许达到$7\times 10^{-13}$的Eötvös比的精度。这一成就将限制违反情况超出我们目前的知识,并将代表一个重要的里程碑,探索各种方案,以进一步改进的测试中概述的文件。我们将讨论汉诺威理工学院(HITec)新基础设施的技术实现,并简要概述达到这种精度的要求。该实验将展示各种技术,这些技术将用于未来的EEP测试,高精度重力测量和重力梯度测量。它包括操作的力敏原子干涉仪与碱土类元素在自由降落,光束分裂宏观距离和新的源的概念。

英文摘要:

We propose a very long baseline atom interferometer test of Einstein's equivalence principle (EEP) with ytterbium and rubidium extending over 10m of free fall. In view of existing parametrizations of EEP violations, this choice of test masses significantly broadens the scope of atom interferometric EEP tests with respect to other performed or proposed tests by comparing two elements with high atomic numbers. In a first step, our experimental scheme will allow reaching an accuracy in the Eötvös ratio of $7\times 10^{-13}$. This achievement will constrain violation scenarios beyond our present knowledge and will represent an important milestone for exploring a variety of schemes for further improvements of the tests as outlined in the paper. We will discuss the technical realisation in the new infrastructure of the Hanover Institute of Technology (HITec) and give a short overview of the requirements to reach this accuracy. The experiment will demonstrate a variety of techniques which will be employed in future tests of EEP, high accuracy gravimetry and gravity-gradiometry. It includes operation of a force sensitive atom interferometer with an alkaline earth like element in free fall, beam splitting over macroscopic distances and novel source concepts.

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。

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