标题： 五维爱因斯坦-高斯-博内引力的球对称引力坍缩 显示英文标题

标题： Spherical gravitational collapse in 5D Einstein-Gauss-Bonnet gravity

摘要： 我们考虑了在高斯-博内（GB）曲率平方项组合的爱因斯坦引力中的非均匀尘埃（和null尘埃）的球形引力坍缩。结果表明，GB项耦合常数$\alpha > 0$的存在完全改变了奇点的因果结构，与类似的广义相对论情况不同。五维GB扩展爱因斯坦方程中的非均匀尘埃引力坍缩导致形成一个质量大但较弱的时间-like奇点，这在广义相对论中是被禁止的。两种不同坍塌解的视界表现出有趣的数学相似性。 显示英文摘要

摘要： We consider a spherical gravitational collapse of inhomogeneous dust (and null dust) in Einstein gravity with the Gauss-Bonnet (GB) combination of quadratic curvature terms. It turns out that the presence of the coupling constant of the GB terms $\alpha > 0$ completely changes the causal structure of the singularities from the analogous general relativistic case. The gravitational collapse of inhomogeneous dust in the five-dimensional GB extended Einstein equations leads to formation of a massive, but weak, timelike singularity which is forbidden in general relativity. The apparent horizons of two different collapsing solutions show interesting mathematical similarity.