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arXiv 0802.3266hep-th
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霍金辐射引起的宇宙学常数的量子隧穿衰变

Decay of the cosmological constant by Hawking radiation as quantum tunneling

Yuichi Sekiwa

摘要:

利用量子隧穿方法计算了宇宙视界中霍金辐射的发射率。利用Hamilton-Jacobi方法和零测地线方法,得到了两个典型的观测值。首先,辐射光谱不是严格意义上的纯热辐射。第二,宇宙学常数的值减小。我们的计算与其他类似的关于宇宙视界霍金辐射的工作不同之处在于,考虑了反反应效应,视界不是收缩而是膨胀.我们表明,当一个正频率粒子的宇宙视界附近的物质化,一个负频率伙伴的背景几何的贡献降低了宇宙学常数的值。本文还讨论了德西特空间的热力学和宇宙的量子创生。

英文摘要:

We calculate the emission rate of Hawking radiation from the cosmological horizon by quantum tunneling approaches. Using the Hamilton-Jacobi and the null geodesic methods, two typical observations are obtained. First, the spectrum of radiation is not strictly pure thermal. Second, the value of the cosmological constant decreases. Our calculation is different from other similar works about Hawking radiation from the cosmological horizon in that the horizon does not shrink but expands by taking into account the back-reaction effect. We show that when a positive frequency particle is materialized near the cosmological horizon, the contribution of a negative frequency partner to the background geometry lowers the value of the cosmological constant. We also touch upon thermodynamics of de Sitter space and the quantum creation of universe.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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