标题： 激光干涉仪对引力波的规范独立响应 显示英文标题

标题： Gauge independent response of a laser interferometer to gravitational waves

摘要： 激光干涉仪对闵可夫斯基背景上的平面引力波的响应被给出。 推导过程并未假定在与保留平面波解形式的几乎闵可夫斯基坐标相容的一类规范中采用任何特定规范。 因此，考虑了度规的所有十个模式。 最终结果，即自由运动观察者之间交换激光信号的传播时间，表示为沿未扰轨迹度规摄动的积分形式。 该结果可以应用于任何度规引力理论；它在摄动的第一阶成立，并且不假设长波长近似。 所得响应被证明定义了一个可观测量，即，它相对于所假设的规范变换类是规范不变的。 显示英文摘要

摘要： Laser interferometer response to a plane gravitational wave on the Minkowski background is given. The derivation does not assume any particular gauge within a class compatible with almost Minkowskian coordinates that preserve a plane wave form of the solutions. Consequently all ten modes of the metric are taken into an account. The final result, the time of flight of a laser signal exchanged between freely moving observers, is expressed in the form of integrals of the metric perturbations taken along the undisturbed trajectories. The result can be applied in any metric theory o gravity; it is valid in the first order of the perturbation and does not assume the long wavelength approximation. The obtained response is shown to define an observable, i.e. it is gauge--invariant with respect to the assumed class of gauge transformations