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arXiv 1310.6743gr-qcastro-ph.HEhep-phhep-th
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广义相对论标量修正的参数化和约束

Parametrizing and constraining scalar corrections to general relativity

Leo C. Stein, Kent Yagi

摘要:

我们参数化的一大类修正广义相对论,其中包括一个长程引力标量场作为动力学自由度的两种方式:参数化的结构的修正行动,和参数化的标量头发(多极结构),紧凑的对象和黑洞达到。这种标量头发的存在违反了广义相对论中的无头发定理,这导致了几个重要的效应。我们考虑的影响是:(i)一个孤立的身体和外部标量场之间的相互作用,(ii)在一个紧凑的二进制的两个机构之间的标量多极-多极相互作用,(iii)额外的近心进动的二进制,(iv)标量辐射的二进制,和(v)修改的引力波相位从一个二进制。我们应用这个框架的例子理论,包括爱因斯坦-牛顿-高斯-邦纳引力和动力学陈-西蒙斯引力,并估计的影响的大小。最后,我们估计的界限,可以放置在参数的脉冲星双星和引力波的进动的理论。

英文摘要:

We parametrize a large class of corrections to general relativity which include a long-ranged gravitational scalar field as a dynamical degree of freedom in two ways: parametrizing the structure of the correction to the action, and parametrizing the scalar hair (multipole structure) that compact objects and black holes attain. The presence of this scalar hair violates the no-hair theorems present in general relativity, which leads to several important effects. The effects we consider are (i) the interaction between an isolated body and an external scalar field, (ii) the scalar multipole-multipole interaction between two bodies in a compact binary, (iii) the additional pericenter precession of a binary, (iv) the scalar radiation from a binary, and (v) the modification to the gravitational wave phase from a binary. We apply this framework to example theories including Einstein-dilaton-Gauss-Bonnet gravity and dynamical Chern-Simons gravity, and estimate the size of the effects. Finally, we estimate the bounds that can be placed on parameters of the theories from the precession of pulsar binaries and from gravitational waves.

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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