Topological R 4 inflation
Topological R 4 inflation
复制标题
拓扑 R 4 膨胀
DOI：
10.1103/physrevd.59.103503
复制
发表时间：
1998
影响因子：
5
通讯作者：
J. Yokoyama
中科院分区：
文献类型：
--
作者：
J. Ellis;N. Kaloper;K. Olive;J. Yokoyama
我们考虑在压缩到四个维度后更高曲率修正可能会推动通货膨胀的可能性。假设基本理论的低能极限是十一维超引力到最低阶，包括曲率修正并通过中间五维理论从十一维下降到四维，正如最近对 10 16 GeV 左右尺度统一的考虑所支持的那样，我们可以获得一个简单的四维暴胀模型。有效自由度是两个标量场和度量。标量作为大的五维模量和度量的自相互作用共形模式而出现。除了更常见的最小值之外，有效势还具有局部最大值。然而，顶部的潜力相当平坦，并且承认拓扑膨胀。我们证明该模型可以解决宇宙学问题，并提供一种结构形成机制，只需很少的微调。 @S0556-2821~99!02808-8#
We consider the possibility that higher-curvature corrections could drive inflation after the compactification to four dimensions. Assuming that the low-energy limit of the fundamental theory is eleven-dimensional supergravity to the lowest order, including curvature corrections and taking the descent from eleven dimensions to four via an intermediate five-dimensional theory, as favored by recent considerations of unification at some scale around ;10 16 GeV, we may obtain a simple model of inflation in four dimensions. The effective degrees of freedom are two scalar fields and the metric. The scalars arise as the large five-dimensional modulus and the self-interacting conformal mode of the metric. The effective potential has a local maximum in addition to the more usual minimum. However, the potential is quite flat at the top, and admits topological inflation. We show that the model can resolve cosmological problems and provide a mechanism for structure formation with very little fine tuning. @S0556-2821~99!02808-8#