标题： 带有扭力的黑洞宇宙中的共形时间 显示英文标题

标题： Conformal time in a black-hole universe with torsion

摘要： 在爱因斯坦-卡坦-斯马-基布尔引力理论中，费米物质的内禀自旋产生时空扭力，并在极高密度下引发引力排斥。 这种排斥阻止了黑洞中坍缩的自旋流体形成奇点。 相反，具有刚性状态方程的黑洞内部会成为一个新宇宙，在收缩至（大）反弹后开始膨胀。 我们根据共形时间推导出在这种情景下形成的宇宙的动力学方程，共形时间是测试宇宙微波背景辐射中收缩阶段特征的方便变量。 显示英文摘要

摘要： In the Einstein-Cartan-Sciama-Kibble theory of gravity, the intrinsic spin of fermionic matter generates spacetime torsion and induces gravitational repulsion at extremely high densities. This repulsion prevents the collapsing spin-fluid matter in a black hole from forming a singularity. Instead, the interior of a black hole with a stiff equation of state becomes a new universe, which contracts until a (big) bounce and then expands. We derive the equations describing the dynamics of our Universe, formed in such a scenario, in terms of the conformal time which is a convenient variable for testing signatures of the contracting phase in the Cosmic Microwave Background radiation.