标题： 渐近安全幻影宇宙学 显示英文标题

标题： Asymptotically safe phantom cosmology

摘要： 我们考虑在弗里德曼-罗伯逊-沃尔克时空中的幽灵宇宙学的量子修正。 通过重整化群改进的宇宙学演化方程被获得。 对于指数势，我们发现两种类型的宇宙学固定点；重整化群尺度要么冻结，要么继续随标度因子演化。 我们讨论了这些点的含义，并特别研究是否可以避免大撕裂。 如果重整化群流的固定点与宇宙学固定点重合，宇宙将由暗物质主导，并且不会受到大撕裂的影响。 显示英文摘要

摘要： We consider quantum modifications to phantom cosmology in a Friedmann-Robertson-Walker spacetime. The cosmological evolution equations improved by the renormalization group are obtained. For exponential potential, we find two types of cosmological fixed point; the renormalization group scale either freezes in, or continues to evolve with scale factor. We discuss the implications of each of these points, and investigate especially whether the big rip can be avoided. If the fixed point of renormalization group flow coincides with the cosmological fixed point, the universe will be dominated by dark matter and will be free from the big rip.