Phantom inflation and the “Big Trip”
Phantom inflation and the “Big Trip”
复制标题
DOI：
10.1016/j.physletb.2004.06.080
复制
发表时间：
2004-06
影响因子：
4.4
通讯作者：
P. González-Díaz;J. A. Jiménez-Madrid
中科院分区：
文献类型：
--
作者：
P. González-Díaz;J. A. Jiménez-Madrid
原始暴胀被认为是由虚场驱动的，虚场在这里被实现为满足状态方程p=ωρ，且ω< - 1的标量场。幽灵能量的怪异特性甚至会使情况更加恶化，这将给脱离暴胀阶段带来严重的问题。然而，我们认为，通过考虑一个多元宇宙的场景，我们仍然可以暂时恢复从幽灵暴胀阶段的平稳退出，在这个场景中，原始的幽灵宇宙将在到达大裂口之前，及时旅行到一个充满常规辐射的未来宇宙。我们称这种转变为“大旅行”，并假设它是在某种形式的人择原理的帮助下发生的，这种原理选择我们当前的宇宙作为时间转变的最终目的地。
Primordial inflation is regarded to be driven by a phantom field which is here implemented as a scalar field satisfying an equation of state p=ωρ, with ω<−1. Being even aggravated by the weird properties of phantom energy, this will pose a serious problem with the exit from the inflationary phase. We argue, however, in favor of the speculation that a smooth exit from the phantom inflationary phase can still be tentatively recovered by considering a multiverse scenario where the primordial phantom universe would travel in time toward a future universe filled with usual radiation, before reaching the big rip. We call this transition the “Big Trip” and assume it to take place with the help of some form of anthropic principle which chooses our current universe as being the final destination of the time transition.