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arXiv 0905.3578hep-th
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Hagedorn温度下弦谱的一个注记

A note on the string spectrum at the Hagedorn temperature

J. D. Madrigal, P. Talavera

摘要:

我们讨论了有限温度下的半经典弦构型。我们发现,在强耦合区,当我们接近哈格多恩温度时,在背景中描述IIA型弦的孤子解消失或发散。这些发现与对霍金辐射的半经典分析一起,使我们认为霍金辐射主要是由高激发态的存在所驱动的。作为侧,我们检查,除了物理不稳定性的系统是动力学不稳定之前达到哈格多恩温度。

英文摘要:

We discuss semi-classical string configurations at finite temperature. We find that those soliton solution in the background describing type IIA strings disappear or become divergent when we approach the Hagedorn temperature in the strong coupling regime. These findings together with a semi-classical analysis for the Hawking radiation let us to think that Hawking radiation is mainly driven by the existence of highly excited states. As by side, we check that beside the thermodynamical instability the system is dynamical unstable before reaching the Hagedorn temperature.

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