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arXiv 1810.08166gr-qcastro-ph.COhep-th
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走向几何暴胀:立方情形

Towards geometric inflation: the cubic case

Gustavo Arciniega, Jose D. Edelstein, Luisa G. Jaime

摘要:

我们提出了一种对广义相对论的三次曲率修正,具有以下特点:(i)它的真空谱仅由引力子组成,并且没有鬼,(ii)它具有与爱因斯坦立方引力相一致的良好的黑洞解,(iii)它的宇宙学是适定的初值问题,并且,最重要的是,(iv)它需要一种几何机制来触发早期宇宙的暴胀期(由辐射驱动),并优雅地退出到任意接近$Λ$ CDM的晚期宇宙学。

英文摘要:

We present an up to cubic curvature correction to General Relativity with the following features: (i) its vacuum spectrum solely consists of a graviton and is ghost-free, (ii) it possesses well-behaved black hole solutions which coincide with those of Einsteinian cubic gravity, (iii) its cosmology is well-posed as an initial value problem and, most importantly, (iv) it entails a geometric mechanism triggering an inflationary period in the early universe (driven by radiation) with a graceful exit to a late-time cosmology arbitrarily close to $Λ$CDM.

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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