Short-Range Tests of Gravitational Physics
Short-Range Tests of Gravitational Physics
复制标题
引力物理的短程测试
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
D. Smith
中科院分区：
文献类型：
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作者：
H. Leopardi;D. Smith
由于标准模型和广义相对论的不相容性，引力的测试仍然是实验物理研究的前沿。在洪堡州立大学，本科生和教职员工正在开发一项实验，该实验将测试50微米距离尺度以下的引力相互作用。该实验将测量扭转摆的扭曲，因为吸引子质量在平行板配置中在附近振荡，在摆上提供随时间变化的扭矩。扭矩变化的大小和距离依赖性将提供确定在未经测试的距离尺度上与公认的重力模型的偏差的手段。为了观察真空室内摆的扭转，需要具有纳米弧度精度的光学系统。光学自准直仪系统，现在达到所需的灵敏度，以及最近的数据与此更新的系统进行了讨论。此外，一个适应迈克尔逊干涉仪的概述正在开发作为一个全新的光学系统。该系统将有可能提供一个显着增加的能力，以测量微小的变化，在扭转摆的角度。
Due to the incompatibility of the Standard Model and General Relativity, tests of gravity remain at the forefront of experimental physics research. At Humboldt State University, undergraduates and faculty are developing an experiment that will test gravitational interactions below the 50-micron distance scale. The experiment will measure the twist of a torsion pendulum as an attractor mass is oscillated nearby in a parallel-plate configuration, providing a time varying torque on the pendulum. The size and distance dependence of the torque variation will provide means to determine deviations from accepted models of gravity on untested distance scales. To observe the twist of the pendulum inside the vacuum chamber, an optical system with nano-radian precision is required. Improvements made to the optical autocollimator system that now achieves the required sensitivity, as well as recent data taken with this updated system are discussed. In addition, an overview of an adapted Michelson interferometer is being developed as an entirely new optical system. This system will potentially offer a dramatic increase in the ability to measure small changes in the angle of the torsion pendulum.