摘要
从deSitter时空背景下的Klein Gordon方程出发 ,利用brick wall方法计算了宇宙的自由能和熵 .结果表明 ,宇宙的熵与Schwarzschild黑洞一样 ,也为视界面积的 1/ 4 .可见 ,brick wall方法具有更广泛的适用性 ,不但可以计算黑洞的熵 ,而且可以计算宇宙的熵 .
By thinking of Klein Gordon equation in de Sitter spacetime, the free energy and entropy are calculated under this background via brick wall method. It is found that the entropy of this system is 1/4 of the area of cosmological event horizon as the case of the Schwarzschild black hole.The brick wall method not only can be used to calculate entropy of black hole, but also to calculate that of de Sitter universe.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2000年第1期62-65,共4页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金资助项目!(197730 0 3)
教育部博士点基金资助项目!(96 0 0 2 70 1)
关键词
deSitter时空
熵
宇宙学
黑洞
de Sitter spacetime
entropy
brick wall method
cosmology
black hole
