搜索结果: 136-139 共查到“运动宇宙学”相关记录139条 . 查询时间(2.001 秒)
A brief review of inflation is presented. After having demonstrated the generality of the inflationary mechanism, the emphasis is put on its simplest realization, namely the single field slow-roll inf...
科学家研究证实：黑洞“出生”在宇宙早期
黑洞 宇宙早期
2004/12/6
北京晚报2004年12月2日讯 据美联社报道，在新一期《天体物理》杂志上，科学家通过两项不同的研究证实，宇宙黑洞在宇宙初期即在宇宙大爆炸后不久，就聚合了大量的物质，迅速“出生”了。它们的形成只用了大约10亿年的时间。科学家称这个速度“快得难以令人相信”。目前科学家已经掌握了足够的证据，证明黑洞形成在宇宙早期，而且已经找到为数不少的这样的黑洞。
Irreversible Processes and the Accelerated-Decelerated Phases of the Universe
Irreversible Processes the Accelerated-Decelerated Phases the Universe
2010/10/26
A model for the Universe is proposed where it is considered as a mixture of scalar and matter fields. The particle production is due to an irreversible transfer of energy from the gravitational field ...
Remarks on Some Vacuum Solutions of Scalar-Tensor Cosmological Models
Vacuum Solutions Scalar-Tensor Cosmological Models
2010/10/21
We present a class of exact vacuum solutions corresponding to de Sitter and warm inflation models in the framework of scalar-tensor cosmologies. We show that in both cases the field equations reduce t...