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arXiv 0806.3397gr-qc
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用于探测引力波随机背景的真空线性化爱因斯坦场方程解

A solution of linearized Einstein field equations in vacuum used for the detection of the stochastic background of gravitational waves

Christian Corda

摘要:

本文给出并讨论了真空中线性化爱因斯坦场方程的一种解。首先,它表明,计算从我们的特定度量的线性化的连接,线性化的黎曼张量和线性化的Ricci张量,线性化的Ricci张量的结果等于零。然后讨论了我们的解是一种引力波时对检验质量的影响。在我们的解决方案中,测试质量在波的传播方向上有明显的运动,而在横向方向上,它们似乎是静止的。这样就有可能认为引力波是纵波,但是,通过对这种解的仔细研究,可以看出,与引力波有关的潮汐力沿着与波的传播方向正交的方向作用。首先在长波近似下进行计算(波长远大于测试质量之间的线性距离),然后将分析推广到所有的引力波。在本文的最后一节中,它表明,频率依赖的干涉仪的角模式可以从我们的解决方案和总的信号从干涉仪看到的引力波的随机背景计算。

英文摘要:

A solution of linearized Einstein field equations in vacuum is given and discussed. First it is shown that, computing from our particular metric the linearized connections, the linearized Riemann tensor and the linearized Ricci tensor, the linearized Ricci tensor results equal to zero. Then the effect on test masses of our solution, which is a gravitational wave, is discussed. In our solution test masses have an apparent motion in the direction of propagation of the wave, while in the transverse direction they appear at rest. In this way it is possible to think that gravitational waves would be longitudinal waves, but, from careful investigation of this solution, it is shown that the tidal forces associated with gravitational waves act along the directions orthogonal to the direction of propagation of waves. The computation is first made in the long wavelengths approximation (wavelength much larger than the linear distances between test masses), then the analysis is generalized to all gravitational waves. In the last sections of this paper it is shown that the frequency dependent angular pattern of interferometers can be obtained from our solution and the total signal seen from an interferometer for the stochastic background of gravitational waves is computed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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