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首页> 外文期刊>Journal of High Energy Physics, Gravitation and Cosmology >Gravitational Waves in a Universe with Time-Varying Curvature
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Gravitational Waves in a Universe with Time-Varying Curvature

机译:在宇宙中的引力波与时变曲率的宇宙

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In this paper, we present a complete solution of Einstein’s equations for the gravitational wave (GW) problem. The full metric is taken in the usual way to be the sum of a background vacuum metric plus a perturbation metric describing the GW. The background metric used is characterized by time-varying curvature as described in a recent paper. The solution we develop here does exhibit some features found in the standard model but it also contains others that are not found in the standard model. One difference is that the solution with time-varying curvature only allows for outward-directed waves. While this might seem a minor point regarding the GW equations, it is actually a significant verification of the solution presented in our earlier paper. A more obvious difference is that the solution demands that the vacuum along with all matter must experience transverse motion with the passing of the waves. This fact leads to the idea that a new approach to the detection problem based on the Doppler effect could well be practical. Such an approach, if feasible, would be much simpler and less costly to implement than the large-scale interferometer system currently under development.
机译:在本文中,我们为引力波(GW)问题的Einstein方程提供了完整的解决方案。以通常的方式采用完整的度量,作为背景真空度量的总和以及描述GW的扰动度量。所使用的背景度量的特征在于,如最近纸张中所述的时变曲率。我们在此开发的解决方案确实表现出标准模型中的一些功能,但它还包含标准模型中未找到的其他功能。一个区别在于,具有时变曲率的解决方案仅允许向外的波。虽然这似乎是关于GW方程的轻微点,但实际上它实际上是对我们之前纸张中呈现的解决方案的重大验证。一种更明显的差异是解决方案要求真空与所有物质一起经历横向运动随着波浪的通过。这一事实导致了基于多普勒效应的检测问题的新方法很实用。这种方法如果可行,可以比目前正在开发的大型干涉仪系统更简单,更昂贵。

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