The Global Network of Optical Magnetometers for Exotic physics (GNOME): A novel scheme to search for physics beyond the Standard Model
The Global Network of Optical Magnetometers for Exotic physics (GNOME): A novel scheme to search for physics beyond the Standard Model
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DOI：
10.1002/andp.201300061
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发表时间：
2013-09-01
影响因子：
2.4
通讯作者：
Budker, Dmitry
中科院分区：
文献类型：
--
作者：
Pustelny, Szymon;Kimball, Derek F. Jackson;Budker, Dmitry
一个新的实验方案，使调查的瞬态奇异自旋耦合进行了讨论。该方案的基础是对在遥远地点（100公里）磁屏蔽环境中工作的几个设备的光学磁力计信号进行同步测量。虽然这种奇异耦合的特征可能存在于来自单个磁力计的信号中，但将它们与噪声区分开来将是具有挑战性的。通过分析来自多个地理上分离的磁力计的信号之间的相关性，不仅可以识别外来瞬态，而且可以研究其性质。通过考虑自旋耦合到稳定的拓扑缺陷（例如，域壁）的类轴子场。在这项研究的精神，一个简短的（约2小时）演示实验，涉及两个磁力计位于克拉科夫和伯克利（约9000公里的分离）和讨论的数据分析方法，可以识别瞬态信号。最后对网络的发展前景进行了展望。
A novel experimental scheme enabling the investigation of transient exotic spin couplings is discussed. The scheme is based on synchronous measurements of optical-magnetometer signals from several devices operating in magnetically shielded environments in distant locations ( 100 km). Although signatures of such exotic couplings may be present in the signal from a single magnetometer, it would be challenging to distinguish them from noise. By analyzing the correlation between signals from multiple, geographically separated magnetometers, it is not only possible to identify the exotic transient but also to investigate its nature. The ability of the network to probe presently unconstrained physics beyond the Standard Model is examined by considering the spin coupling to stable topological defects (e.g., domain walls) of axion-like fields. In the spirit of this research, a brief (approximate to 2 hours) demonstration experiment involving two magnetometers located in Krakow and Berkeley (approximate to 9000 km separation) is presented and discussion of the data-analysis approaches that may allow identification of transient signals is provided. The prospects of the network are outlined in the last part of the paper.