Large parallel cosmic string simulations: New results on loop production
Large parallel cosmic string simulations: New results on loop production
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大型并行宇宙弦模拟：循环产生的新结果
DOI：
10.1103/physrevd.83.083514
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发表时间：
2011
影响因子：
5
通讯作者：
Benjamin Shlaer
中科院分区：
文献类型：
--
作者：
J. Blanco;K. Olum;Benjamin Shlaer
使用一种新的并行计算技术，我们已经进行了有史以来最大的宇宙弦模拟。我们的结果证实了存在一个长的瞬变周期，其中根据初始关联尺度在一定长度上产生小回路的非标度分布。随着时间的推移，最初的种群会让位于真正的缩放机制，其中大小大约等于地平线距离的二十分之一的环成为一个重要的组成部分。我们在物质时代和辐射时代观察到类似的行为，在平坦的空间中也是如此。在物质时代，不断扩大的大型环路数量成为主导成分；我们预计这最终也会发生在其他时代。
Using a new parallel computing technique, we have run the largest cosmic string simulations ever performed. Our results confirm the existence of a long transient period where a nonscaling distribution of small loops is produced at lengths depending on the initial correlation scale. As time passes, this initial population gives way to the true scaling regime, where loops of size approximately equal to one-twentieth the horizon distance become a significant component. We observe similar behavior in matter and radiation eras, as well as in flat space. In the matter era, the scaling population of large loops becomes the dominant component; we expect this to eventually happen in the other eras as well.