Emergent Spacetime and Cosmic Inflation

Emergent Spacetime and Cosmic Inflation
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新兴时空和宇宙膨胀

DOI:
10.3390/universe10030150
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发表时间:
2015
期刊:
影响因子:
2.9
通讯作者:
Hyun Seok Yang
Hyun Seok Yang
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Hyun Seok Yang

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我们从一个矩阵模型出发,提出了一个新的独立于背景的宇宙暴涨框架。在这个框架中,通货膨胀被描绘成一个动态的过程,负责空间和时间的产生。这与传统的暴涨形成了鲜明对比,传统暴涨的特征是,在与暴胀场相关的真空能量的驱动下,一个已经存在的时空仅仅(指数地)膨胀。我们观察到,宇宙暴胀是由普朗克能量凝聚成真空而引发的,并对时空的动态出现负责。浮现的时空图景允许一个与背景无关的公式,因此暴胀可以用一个共形哈密顿系统来描述,它既不需要暴胀场,也不需要特别的暴胀势。这意味着,浮现的时空可能会使引入多元宇宙假说的所有理论丧失能力。
We present a novel background-independent framework for cosmic inflation, starting with a matrix model. In this framework, inflation is portrayed as a dynamic process responsible for the generation of both space and time. This stands in contrast to conventional inflation, which is characterized as a mere (exponential) expansion of an already existing spacetime, driven by the vacuum energy associated with an inflaton field. We observe that the cosmic inflation is triggered by the condensate of Planck energy into a vacuum and responsible for the dynamical emergence of spacetime. The emergent spacetime picture admits a background-independent formulation so that the inflation is described by a conformal Hamiltonian system which requires neither an inflaton field nor an ad hoc inflation potential. This implies that the emergent spacetime may incapacitate all the rationales to introduce the multiverse hypothesis.
DOI: 10.1007/978-94-009-3807-6
发表时间: 1987
期刊: --
影响因子: --
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