论文标题
早期宇宙中有效维度和宇宙熵的运行
Running of effective dimension and cosmological entropy in early universe
论文作者
论文摘要
在本文中，我们建议早期的宇宙从具有二维描述的高能状态开始，当宇宙演变成辐射占据阶段时，状态恢复为四个维度。这种情况与最近的观点是一致的：量子重力应在紫外线中有效二维，并且在红外线中恢复为四维。在有效维度的运行与宇宙内部粒子内部粒子内部的熵之间建立了关系，即当有效尺寸从2到四个到四，相应的熵从适合辐射的正常熵的全息熵进行。这些结果可以推广到更高维度的情况。
In this paper, we suggest that the early universe starts from a high-energetic state with a two dimensional description and the state recovers to be four dimensional when the universe evolves into the radiation dominated phase. This scenario is consistent with the recent viewpoint that quantum gravity should be effectively two dimensional in the ultraviolet and recovers to be four dimensional in the infrared. A relationship has been established between the running of effective dimension and that of the entropy inside particle horizon of the universe, i.e., as the effective dimension runs from two to four, the corresponding entropy runs from the holographic entropy to the normal entropy appropriate to radiation. These results can be generalized to higher dimensional cases.
