论文标题
熵及其在扩展宇宙中的保护
Entropy and its conservation in expanding Universe
论文作者
论文摘要
我们调查了一般相对性的保守指控的财产，最近由一位作者及其合作者，通货膨胀时代，事物占据主导的时代和辐射占主导地位的时代。我们表明，通货膨胀时代的保守电荷变成了de de Sitter空间的Bekenstein-Hawking熵，并且分别成为物质的熵和辐射熵，分别以辐射为主的时代，而电荷本身始终是保守的。通过对具有标量场和辐射的模型的数值分析来定性地确认这些属性。本文的结果提供了更多的证据，即一般相对论中保守的电荷对应于熵。
We investigate properties of the conserved charge in general relativity, recently proposed by one of the present authors with his collaborators, in the inflation era, the matter dominated era and the radiation dominated era of the expanding Universe. We show that the conserved charge in the inflation era becomes the Bekenstein-Hawking entropy for de Sitter space, and it becomes the matter entropy and the radiation entropy in the matter and radiation dominated eras, respectively, while the charge itself is always conserved. These properties are qualitatively confirmed by a numerical analysis of a model with a scalar field and radiations. Results in this paper provide more evidences on the interpretation that the conserved charge in general relativity corresponds to entropy.
