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arXiv 1109.4258gr-qcastro-ph.IM
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利用具有动态重力场发生器的干涉测量传感器测试非牛顿重力的机会

Opportunity to Test non-Newtonian Gravity Using Interferometric Sensors with Dynamic Gravity Field Generators

Peter Raffai, Gabor Szeifert, Luca Matone, Yoichi Aso, Imre Bartos, Zsuzsa Marka, Fulvio Ricci, Szabolcs Marka

摘要:

我们提出了一个实验的机会,未来测量可能违反牛顿1/r^2定律在0.1-10米范围内使用动态重力场发生器(DFG),并利用现代干涉技术的特殊灵敏度。将DFG放置在干涉仪的一个悬挂测试质量附近会产生局部引力场的变化,这种变化可以在高信噪比下测量。在零实验配置中使用多个DFG允许测试显著超出当前限制的与成分无关的非牛顿重力。先进的第三代引力波探测器代表了当今干涉测距的最新技术,因此我们通过它们的灵敏度来说明该方法,以强调可能的科学范围。然而,由于引力波探测器的技术细节,DFG可能需要专用的定制配置干涉测量。然而,我们得到的灵敏度测量是一个坚实的基线,表明它是可行的,考虑探测到原始参数的数量级远远超出目前的实验限制,显着切入理论参数空间。

英文摘要:

We present an experimental opportunity for the future to measure possible violations to Newton's 1/r^2 law in the 0.1-10 meter range using Dynamic gravity Field Generators (DFG) and taking advantage of the exceptional sensitivity of modern interferometric techniques. The placement of a DFG in proximity to one of the interferometer's suspended test masses generates a change in the local gravitational field that can be measured at a high signal to noise ratio. The use of multiple DFGs in a null experiment configuration allows to test composition independent non-Newtonian gravity significantly beyond the present limits. Advanced and third-generation gravitational-wave detectors are representing the state-of-the-art in interferometric distance measurement today, therefore we illustrate the method through their sensitivity to emphasize the possible scientific reach. Nevertheless, it is expected that due to the technical details of gravitational-wave detectors, DFGs shall likely require dedicated custom configured interferometry. However, the sensitivity measure we derive is a solid baseline indicating that it is feasible to consider probing orders of magnitude into the pristine parameter well beyond the present experimental limits significantly cutting into the theoretical parameter space.

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