摘要：
This total energy is called the ADM mass of slice $\Sigma_t$ $$ \displaystyle \fbox{$ M_{\rm ADM} = {\dfrac{1}{16\pi}} \lim\limits_{{{S}}_{t}\rightarr 阅读全文
摘要：
Spherically Symmetric Case For the spherically symmetric case, $f$ is constant. Thus $$ \begin{equation} D_as^a=\frac{1}{\sqrt{\gamma}}\partial_r (\sq 阅读全文
摘要：
body { font-family: "仿宋","FangSong", "宋体", "Segoe UI", Tahoma, Arial; font-size: 20px!important; color:blue; } DIV.post DIV.entry { font-family: "仿宋", 阅读全文
摘要：
Finding Black Holes 1 The apparent horizon (i.e., the marginally trapped outer surface) is an invaluable tool for finding black holes in numerical rel 阅读全文