Kinks and small-scale structure on cosmic strings
Kinks and small-scale structure on cosmic strings
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DOI：
10.1103/physrevd.80.123523
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发表时间：
2009-09
影响因子：
5
通讯作者：
E. Copeland;T. Nottingham;I. -. London
中科院分区：
文献类型：
--
作者：
E. Copeland;T. Nottingham;I. -. London
我们讨论宇宙弦的小尺度结构的一些迄今令人困惑的特征。我们认为，扭结起着关键作用，一个重要的量来研究是他们的锐度分布。特别地，我们建议，对于非常小的尺度，弦切向量的两点相关函数随分离线性变化，而不是如Polchinski和罗查[Phys. Rev. D 74，083504（2006）]所提出的分数幂。然而，我们的结果与他们的结果是一致的，因为随着进化的进行，这种线性适用的尺度范围会缩小。
We discuss some hitherto puzzling features of the small-scale structure of cosmic strings. We argue that kinks play a key role, and that an important quantity to study is their sharpness distribution. In particular we suggest that for very small scales the two-point correlation function of the string tangent vector varies linearly with the separation and not as a fractional power, as proposed by Polchinski and Rocha [Phys. Rev. D 74, 083504 (2006)]. However, our results are consistent with theirs, because the range of scales to which this linearity applies shrinks as evolution proceeds.