arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2010.09795astro-ph.COgr-qc
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再加热约束$α$ -吸引子模型

Constraining $α$-attractor models from reheating

Gabriel German

摘要:

我们消除了原来存在于膨胀的$α$吸引子类型的模型中的参数,有利于标量谱指数$n_s$和张量标量比$r$。然后,我们编写表达式的$e$ -折叠数在重新加热$ N_ {re} $。通过对$N_{re}$施加合理的条件,我们可以限制$n_s$和$r$,反过来,我们使用这些约束,以找到宇宙学的利益量的界限,如膨胀和辐射主导的时代期间的$e$ -折叠的数量,以及再加热温度和运行指数。$N_ {re}$必须满足的最小条件是$N_ {re}\geq 0$,我们用它来约束上面提到的宇宙学量。特别地,我们发现张量与标量之比$r$(以及因此暴胀的能量标度)是有界的。我们提供的数字说明这些数量的行为作为$r$的几个值的$n_s$和表包含的界限,因此获得的功能。

英文摘要:

We eliminate the parameters originally present in models of inflation of the $α$-attractor type in favor of the scalar spectral index $n_s$ and the tensor-to-scalar ratio $r$. We then write expressions for the number of $e$-folds during reheating $ N_ {re} $. By imposing reasonable conditions on $N_{re}$ we can restrict $n_s$ and $r$ and in turn, we use these constraints in order to find bounds for cosmological quantities of interest such as the number of $e$-folds during inflation and the radiation dominated eras, as well as for the reheating temperature and the running index. The minimum condition that $N_ {re}$ must satisfy is $N_ {re}\geq 0$ which we use to constrain the cosmological quantities mentioned above. In particular, we find that the tensor-to-scalar ratio $r$ (and as a consequence the energy scale of inflation) is bounded from below. We provide figures illustrating the behavior of these quantities as functions of $r$ for several values of $n_s$ and tables containing the bounds so obtained.

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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