Area spectrum of horizon and black hole entropy

被引：2
|
作者：
Tanaka, Tomo [1 ]
Tamaki, Takashi [2 ]
机构：
[1] Waseda Univ, Dept Phys, Okubo 3-4-1, Tokyo 1698555, Japan
[2] Nihon Univ, Coll Engn, Dept Phys, Koriyama, Fukushima 9638642, Japan
来源：
EUROPEAN PHYSICAL JOURNAL C | 2013年 / 73卷 / 02期
关键词：
QUANTUM GEOMETRY;
D O I：
10.1140/epjc/s10052-013-2314-0
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We calculate the number of degrees of freedom in spin network states related to the general area spectrum in loop quantum gravity based on the ABCK framework. We find that a black hole entropy (the logarithm of the degrees of freedom) is proportional to its area but it provides us with a different value of the Barbero-Immirzi parameter (gamma = 0.9284 ... or 0.7274 ... ). It means that one should be careful in choosing the area spectrum when we describe a horizon area in full quantum gravity.
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页码：1 / 9
页数：9
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