Gravitational waves from kinks on infinite cosmic strings
Gravitational waves from kinks on infinite cosmic strings
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DOI：
10.1103/physrevd.81.103523
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发表时间：
2010-02
影响因子：
5
通讯作者：
M. Kawasaki;Koichi Miyamoto;K. Nakayama
中科院分区：
文献类型：
--
作者：
M. Kawasaki;Koichi Miyamoto;K. Nakayama
通过对无限弦上扭结分布的详细估计来研究无限弦上扭结发射的引力波。我们发现，如果弦环的典型尺寸远小于其形成时的地平线，则可以通过未来的脉冲星计时实验（例如 SKA）检测到扭结产生的引力波，以获得适当的弦张力值。此外，引力波谱取决于宇宙的热历史，因此它可以用作宇宙早期演化的探针。
Gravitational waves emitted by kinks on infinite strings are investigated using detailed estimations of the kink distribution on infinite strings. We find that gravitational waves from kinks can be detected by future pulsar timing experiments such as SKA for an appropriate value of the string tension, if the typical size of string loops is much smaller than the horizon at their formation. Moreover, the gravitational wave spectrum depends on the thermal history of the Universe and hence it can be used as a probe into the early evolution of the Universe.