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arXiv 1105.1340gr-qchep-th
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正则量子引力引起的修正时空结构中的黑洞视界

Black-hole horizons in modified space-time structures arising from canonical quantum gravity

Martin Bojowald, George M. Paily, Juan D. Reyes, Rakesh Tibrewala

摘要:

正则量子引力的一些性质改变了时空结构,有时甚至到了不存在有效的线元来描述几何的程度。因此,对解决方案的分析,例如对黑洞的分析,需要新的见解。在这篇文章中,视界的标准定义,球对称的第一个重新制定的规范,然后评估的方程和约束的解决方案修改的环量子引力的逆三重校正。在可能的情况下,进行时空分析,揭示黑洞的质量阈值和霍金辐射的微小变化。对于更一般的结论,正则微扰理论发展到二阶,包括从物质的反反应。这些结果对于在圈量子引力中计算黑洞熵时是否应考虑牛顿常数的重整化或视界条件的其它修正等问题有一定的启发作用。

英文摘要:

Several properties of canonical quantum gravity modify space-time structures, sometimes to the degree that no effective line elements exist to describe the geometry. An analysis of solutions, for instance in the context of black holes, then requires new insights. In this article, standard definitions of horizons in spherical symmetry are first reformulated canonically, and then evaluated for solutions of equations and constraints modified by inverse-triad corrections of loop quantum gravity. When possible, a space-time analysis is performed which reveals a mass threshold for black holes and small changes to Hawking radiation. For more general conclusions, canonical perturbation theory is developed to second order to include back-reaction from matter. The results shed light on the questions of whether renormalization of Newton's constant or other modifications of horizon conditions should be taken into account in computations of black-hole entropy in loop quantum gravity.

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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