Black holes from nucleating strings.
Black holes from nucleating strings.
复制标题
来自成核弦的黑洞。
DOI：
10.1103/physrevd.47.3265
复制
发表时间：
1992
期刊：
影响因子：
--
通讯作者：
A. Vilenkin
中科院分区：
文献类型：
--
作者：
J. Garriga;A. Vilenkin
我们评估了膨胀过程中自发成核的弦环在膨胀结束后坍缩时形成黑洞的概率。然后，我们使用原初黑洞密度的观测界限来限制模型的参数。将这些限制与当前膨胀期间膨胀率的上限相结合，我们得出结论，由成核弦形成的黑洞的密度太低而无法观察到。此外，还简要讨论了膨胀过程中对磁畴壁成核和单极子对产生的限制
We evaluate the probability that a loop of string that has spontaneously nucleated during inflation will form a black hole upon collapse, after the end of inflation. We then use the observational bounds on the density of primordial black holes to put constraints on the parameters of the model. Combining these constraints with current upper limits on the expansion rate during inflation, we conclude that the density of black holes formed from nucleating strings is too low to be observed. Also, constraints on domain wall nucleation and monopole pair production during inflation aree briefly discussed