论文标题

斜率在多种多样的宇宙学模型中的作用

The role of the slope in the the multi-measure cosmological model

论文作者

Staicova, Denitsa

论文摘要

在这项工作中,我们报告了有关Guendelman-Nissimov-Pacheva模型的数值探索的一些结果。该模型以前已应用于宇宙学,但是关于其参数有开放的问题。在这里,我们证明了在有效潜力的斜坡上存在的解决方案家族,该斜率保留了通货膨胀及其权力的持续时间。对于这种解决方案,可以看到先前报道的充气标量场现象在斜坡上爬升,在潜在斜率上较低时,效果更为明显。最后,我们比较了模型的动力学和潜在慢速参数,我们发现后者更好地描述了数值观察到的通货膨胀期。

In this work, we report some results on the numerical exploration of the model of Guendelman-Nissimov-Pacheva. This model has been previously applied to cosmology, but there were open questions regarding its parameters. Here we demonstrate the existence of families of solutions on the slope of the effective potential which preserve the duration of the inflation and its power. For this solutions, one can see the previously reported phenomenon of the inflaton scalar field climbing up the slope, with the effect more pronounced when starting lower on the potential slope. Finally we compare the dynamical and the potential slow-roll parameters for the model and we find that the latter describe the numerically observed inflationary period better.

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