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arXiv 1502.01246gr-qchep-th
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关于平台势暴胀的初始条件:$R+R^2$(超)重力情况

On the initial conditions for inflation with plateau potentials: the $R+R^2$ (super)gravity case

Ioannis Dalianis, Fotis Farakos

摘要:

我们讨论了由真空能量驱动的暴胀的初始条件问题,特别是Starobinsky暴胀。我们表明,超引力嵌入的$R+R^2$理论自然减少的因果均匀性的大小,所需的低尺度暴胀发生,由于动力学纯超引力“辅助”领域的存在。我们研究了FLRW宇宙中$R+R^2$场的演化。我们还发现了依赖的初始条件问题的背景空间曲率。

英文摘要:

We discuss the initial conditions problem for inflation driven by the vacuum energy of a plateau potential, and in particular the Starobinsky inflation. We show that the supergravity embedding of the $R+R^2$ theory naturally decreases the size of the acausal homogeneity, required for the low-scale inflation to occur, thanks to the presence of the dynamical pure supergravitational "auxiliary" fields. We examine the evolution of the $R+R^2$ fields within a FLRW Universe. We also find a dependence of the initial conditions problem on the background spatial curvature.

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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