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arXiv 1003.1040hep-th
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模糊空间相干态表象上的量子场、热力学和黑洞

Quantum Field, Thermodynamics and Black Hole on Coherent State Representation of Fuzzy Space

Wung-Hong Huang

摘要:

我们首先使用模糊空间的相干态形式来表明,模糊性将消除粒子的点状结构,而有利于涂抹物体,这是一个指数衰减函数,与Moyal非对易空间中的高斯类型相反。指数衰减函数意味着,在UV区域中,fuzzy在Feynman传播子中提供了额外的功率衰减因子,与Moyal空间中的指数衰减因子形成对比。我们还计算了粒子的热容,发现它在高温下接近于零。接下来,我们使用发现的涂抹源来研究Schwarzschild类几何,并看到黑洞可以达到有限的最高温度之前冷却到绝对零度,并留下一个稳定的残留物,在非对易的情况下。讨论了模糊三维BTZ和模糊Kaluza-Klein黑洞的性质。最后,我们给出了具有一般模糊源函数的规则黑洞存在的一个判据。

英文摘要:

We first use the coherent state formalism of fuzzy space to show that the fuzziness will eliminate point-like structure of a particle in favor of smeared object, which is an exponential decay function in contrast to the Gaussian type in the Moyal noncommutative space. The exponential decay function implies that, in the UV region, the fuzziness provides an extra power-decay factor in the Feynman propagator, contrasts to the exponential-decay factor in the Moyal space. We also calculate the particle heat capacity and see that it approaches to zero at high temperature. Next, we use the found smeared source to study the Schwarzschild-like geometry and see that the black hole can reach a finite maximum temperature before cooling down to absolute zero and leave a stable remnant, as that in the noncommutative case. The properties of fuzzy 3D BTZ and the fuzzy Kaluza-Klein black holes are also discussed. Finally, we present a criterion for existence a regular black hole with a general smeared source function.

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