The Thermal Entropy Density of Spacetime

被引：0
|
作者：
Yang, Rongjia [1 ,2 ]
机构：
[1] Hebei Univ, Coll Phys Sci & Technol, Baoding 071002, Peoples R China
[2] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China
来源：
ENTROPY | 2013年 / 15卷 / 01期
基金：
中国国家自然科学基金;
关键词：
thermal entropy density; gravity; thermodynamics; EQUATION-OF-STATE; THERMODYNAMICS; HORIZONS;
D O I：
10.3390/e15010156
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Introducing the notion of thermal entropy density via the first law of thermodynamics and assuming the Einstein equation as an equation of thermal state, we obtain the thermal entropy density of any arbitrary spacetime without assuming a temperature or a horizon. The results confirm that there is a profound connection between gravity and thermodynamics.
引用
收藏
页码：156 / 161
页数：6
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