Self-amplifying Hawking radiation and its background: A numerical study
Self-amplifying Hawking radiation and its background: A numerical study
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自放大霍金辐射及其背景：数值研究
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
J. R. M. Nova
中科院分区：
文献类型：
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作者：
J. Steinhauer;J. R. M. Nova
我们数值研究了一个类似的黑洞，两个地平线与最近的实验相似的参数。我们发现，霍金辐射存在于一个包含密度振荡的背景中，一个零频率涟漪。霍金辐射从自发到自放大，而背景涟漪稳定增长，没有质的变化。可以看出，自放大霍金辐射具有非零频率。与预测相反，背景涟漪甚至在内部视界形成之前就出现了。这项工作与最近观察到的自放大霍金辐射一致，并解释了所看到的一些特征。与最近的工作相比，我们的研究区分了观测到的霍金辐射和背景的演变。
We numerically study an analogue black hole with two horizons with similar parameters to a recent experiment. We find that the Hawking radiation exists on a background which contains a density oscillation, a zero-frequency ripple. The Hawking radiation evolves from spontaneous to self-amplifying, while the background ripple grows steadily with no qualitative change. It is seen that the self-amplifying Hawking radiation has a non-zero frequency. The background ripple appears even before the inner horizon is created, in contrast to predictions. This work is in agreement with the recent observation of self-amplifying Hawking radiation, and explains some of the features seen. In contrast to recent works, our study differentiates between the Hawking radiation observed, and the evolution of the background.