%0 Journal Article
%T Thermodynamics of the Schwarzchild-de Sitter black hole<br>Schwarzchild-de Sitter 黑洞的热力学性质
%A Zhang Li-Chun
%A Li Huai-Fan
%A Zhao Ren
%A <br>张丽春
%A 李怀繁
%A 赵仁
%J 物理学报
%D 2010
%I 
%X Considering the fact that there is a correlation between the black hole horizon and cosmological horizon, we show that the thermodynamic entropy of de Sitter spacetime is the sum of thermodynamic entropies of the black hole horizon and cosmological horizon. The thermodynamic properties of de Sitter spacetime are also derived. It is shown that the upper limit energy of de Sitter spacetime is equal to the energy of pure de Sitter spacetime, The thermal capacity of de Sitter spacetime is negative, so de Sitter spacetime is mechanically unstable.
%K de Sitter spacetime
%K Nernst theorem
%K dark energy
%K equivalent temperature<br>de
%K Sitter时空
%K 能斯特定理
%K 暗能量
%K 等效温度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=0996333BC7E8BE5862CE62F90CC4CE76&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=59906B3B2830C2C5&sid=3AA9E1D17A62923B&eid=4FA8B4A7E0AD1721&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=27