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arXiv 1305.2020gr-qcastro-ph.COhep-th
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通货膨胀的前兆

Precursor of Inflation

Inyong Cho, Hyeong-Chan Kim, Taeyoon Moon

摘要:

我们研究了宇宙的一个非奇异初始状态,它自然地导致暴胀。该模型是由一个具有二次势的标量场描述的Eddington启发的Born-Infeld引力。这个初始状态的曲率由比普朗克尺度小得多的标量场的质量尺度给出。因此,在这个模型中,无论能量密度变得多大,量子引力都不是理解暴胀前阶段所必需的。该模型中的初始状态最终演化为一个长暴胀周期,类似于通常的混沌暴胀。

英文摘要:

We investigate a nonsingular initial state of the Universe which leads to inflation naturally. The model is described by a scalar field with a quadratic potential in Eddington-inspired Born-Infeld gravity. The curvature of this initial state is given by the mass scale of the scalar field which is much smaller than the Planck scale. Therefore, in this model, quantum gravity is not necessary in understanding this pre-inflationary stage, no matter how large the energy density becomes. The initial state in this model evolves eventually to a long inflationary period which is similar to the usual chaotic inflation.

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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