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arXiv 1503.00712hep-thgr-qcmath-phmath.MP
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演生时空与宇宙暴胀

Emergent Spacetime and Cosmic Inflation

Hyun Seok Yang

AI总结:

本文提出一个背景无关的矩阵模型框架,将宇宙暴胀刻画为由普朗克能量凝聚触发的时空动态演生过程,无需暴胀场或特定暴胀势,从而可能消除引入多元宇宙假说的动机。

摘要:

我们提出了一个新颖的背景无关的宇宙暴胀框架,以矩阵模型为起点。在此框架中,暴胀被描绘为负责生成空间与时间的动态过程。这与传统暴胀形成对比,后者被刻画为已有时空的纯粹(指数)膨胀,由与暴胀场相关的真空能量驱动。我们观察到,宇宙暴胀由普朗克能量向真空的凝聚所触发,并负责时空的动态演生。演生时空图景允许背景无关的表述,使得暴胀由共形哈密顿系统描述,该系统既不需要暴胀场,也不需要特定的暴胀势。这意味着演生时空可能使引入多元宇宙假说的所有理由失效。

英文摘要:

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 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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