It has recently been pointed out by Finn that the long-standing derivation of the response of an interferometric gravitational wave detector contains several errors. Here I point out that a contemporaneous derivation of the gravitational wave response for spacecraft doppler tracking and pulsar timing avoids these pitfalls, and when adapted to describe interferometers, recovers a simplified version of Finn's derivation. This simplified derivation may be useful for pedagogical purposes.
Using long-baseline interferometric gravitational waves detectors for high precision measures of the gravitational acceleration
本文讨论了在地球引力场存在的情况下,探测引力波的长基线干涉仪的法布里-珀罗腔由于反射镜倾斜而引起的光轴长度波动的推导。通过与典型的倾斜引起的噪声的比较,它表明,这种潜在的信号,这被认为是一个弱的噪声源,是可以忽略不计的第一代的引力波干涉仪,但在原则上,这种效果可以用于高精度的重力加速度的测量,如果先进的项目将实现高灵敏度。在这种情况下,测量仪的精度可能高于由Istituto di Metrologia“Gustavo Colonnetti”实现的重力仪。
Interferometric signature of higher-order images in a parametrized framework
Università di Salerno(萨莱诺大学);Istituto Nazionale di Fisica Nucleare, Sezione di Napoli(意大利国家核物理研究所,那不勒斯分部);Nordic Institute for Theoretical Physics (NORDITA)(北欧理论物理研究所)
Light-pulse atom interferometers constitute powerful quantum sensors for inertial forces. They are based on delocalised spatial superpositions and the combination with internal transitions directly links them to atomic clocks. Since classical tests of the gravitational redshift are based on a comparison of two clocks localised at different positions under gravity, it is promising to explore whether the aforementioned interferometers constitute a competitive alternative for tests of general relativity. Here we present a specific geometry which together with state transitions leads to a scheme t…