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arXiv 2403.06147gr-qcastro-ph.COhep-thmath-phmath.MP
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Einstein-Gauss-Bonnet引力中暴胀的新慢滚近似

New slow-roll approximations for inflation in Einstein-Gauss-Bonnet gravity

Ekaterina O. Pozdeeva, Maria A. Skugoreva, Alexey V. Toporensky, Sergey Yu. Vernov

AI总结:

针对含Gauss-Bonnet项的暴胀模型提出更准确的新慢滚近似,通过构建二次和四次势模型验证其与观测数据相符,克服了标准近似下无法获得允许观测参数的局限。

摘要:

我们提出了针对带有Gauss-Bonnet项的暴胀模型的新慢滚近似。我们找到了作为标量场函数的标准慢滚参数的更准确表达式。为了检验所考虑近似的准确性,我们构建了具有二次和四次单项式势以及Gauss-Bonnet项的暴胀模型。对这些模型的数值分析表明,所提出的暴胀情景与观测数据不矛盾。新的慢滚近似表明,所构建的暴胀模型与观测数据一致,而在标准慢滚近似下,在所构建模型的相同参数值下却无法得到允许的观测参数。

英文摘要:

We propose new slow-roll approximations for inflationary models with the Gauss-Bonnet term. We find more accurate expressions of the standard slow-roll parameters as functions of the scalar field. To check the accuracy of approximations considered we construct inflationary models with quadratic and quartic monomial potentials and the Gauss-Bonnet term. Numerical analysis of these models indicates that the proposed inflationary scenarios do not contradict to the observation data. New slow-roll approximations show that the constructed inflationary models are in agreement with the observation data, whereas one does not get allowed observational parameters at the same values of parameters of the constructed models in the standard slow-roll approximation.

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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