Search for light scalar dark matter with atomic gravitational wave detectors
Search for light scalar dark matter with atomic gravitational wave detectors
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DOI：
10.1103/physrevd.97.075020
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发表时间：
2018-04-16
影响因子：
5
通讯作者：
Van Tilburg, Ken
中科院分区：
文献类型：
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作者：
Arvanitaki, Asimina;Graham, Peter W.;Van Tilburg, Ken
我们证明了基于一种原子干涉测量的引力波探测器对超轻标量暗物质是敏感的。这样的暗物质可以引起基本常数的时间振荡，其频率由暗物质质量决定，振幅由当地暗物质密度决定。结果是原子跃迁能的调制。我们在一种引力波探测器中指出了这种效应的一个新的时域特征，该探测器比较了两个空间分离的原子干涉仪，这些干涉仪是由一个普通激光参考的。这种探测器可以在与其他建议互补的频带内，将目前对电子-质量或电荷模量暗物质的耦合搜索提高10个数量级。这表明，这类原子传感器在质量上不同于其他引力波探测器，包括基于激光干涉测量的引力波探测器。通过使用类似原子钟的干涉仪，激光噪声只需要一条基线就可以减轻。因此，除了张量信号外，这些原子传感器还可以检测标量信号。
We show that gravitational wave detectors based on a type of atom interferometry are sensitive to ultralight scalar dark matter. Such dark matter can cause temporal oscillations in fundamental constants with a frequency set by the dark matter mass and amplitude determined by the local dark matter density. The result is a modulation of atomic transition energies. We point out a new time-domain signature of this effect in a type of gravitational wave detector that compares two spatially separated atom interferometers referenced by a common laser. Such a detector can improve on current searches for electron-mass or electric-charge modulus dark matter by up to 10 orders of magnitude in coupling, in a frequency band complementary to that of other proposals. It demonstrates that this class of atomic sensors is qualitatively different from other gravitational wave detectors, including those based on laser interferometry. By using atomic-clock-like interferometers, laser noise is mitigated with only a single baseline. These atomic sensors can thus detect scalar signals in addition to tensor signals.