Hawking radiation of massive modes and undulations
Hawking radiation of massive modes and undulations
复制标题
大规模模态和波动的霍金辐射
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
P. Anderson
中科院分区：
文献类型：
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作者：
Antonin Coutant;A. Fabbri;R. Parentani;R. Balbinot;P. Anderson
我们计算了具有垂直于视界的小波矢量的模式的模拟霍金辐射。对于低频，产生的质量项引起全反射。这产生了一个额外的模式混合，发生在超音速区域，这抵消了近视界光谱的红外发散。因此，在白洞流动中发出的波动幅度（具有宏观幅度的0频率波）现在在线性水平上饱和，这与最近在无质量情况下发现的情况不同。此外，我们还指出，质量引入了一种新的波动，这种波动在黑洞流动中产生，并且在流体力学体系中得到了很好的描述。
We compute the analogue Hawking radiation for modes which posses a small wave vector perpendicular to the horizon. For low frequencies, the resulting mass term induces a total reflection. This generates an extra mode mixing that occurs in the supersonic region, which cancels out the infrared divergence of the near horizon spectrum. As a result, the amplitude of the undulation (0-frequency wave with macroscopic amplitude) emitted in white hole flows now saturates at the linear level, unlike what was recently found in the massless case. In addition, we point out that the mass introduces a new type of undulation which is produced in black hole flows, and which is well described in the hydrodynamical regime.