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arXiv 0704.0399gr-qchep-th
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黑洞上线性粒子的霍金辐射

Hawking radiation of linear dilaton black holes

G. Clement, J. C. Fabris, G. T. Marques

摘要:

精确计算了一类非渐近平坦带电粒子在黑洞上的半经典辐射谱,即所谓的线性粒子在黑洞上的辐射谱。在高频区域,这些黑洞的温度一般与表面引力结果一致。在黑洞是无质量的特殊情况下,我们证明了,虽然表面引力仍然是有限的,但没有辐射,与无质量物体不能辐射的事实相一致。

英文摘要:

We compute exactly the semi-classical radiation spectrum for a class of non-asymptotically flat charged dilaton black holes, the so-called linear dilaton black holes. In the high frequency regime, the temperature for these black holes generically agrees with the surface gravity result. In the special case where the black hole is massless, we show that, although the surface gravity remains finite, there is no radiation, in agreement with the fact that massless objects cannot radiate.

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