论文标题

$ f(r,t)$重力的温暖通货膨胀

Warm Inflation in $f(R,T)$ gravity

论文作者

Deb, Biswajit, Yeasmin, Sabina, Deshamukhya, Atri

论文摘要

在这项工作中,我们探索了$ f(R,T)$重力在强大耗散制度中的温暖通货膨胀。考虑到FLRW宇宙的标量字段,我们得出了修改的字段方程。然后,我们在慢速近似值下推导慢速参数,然后推导标量和张量扰动及其相应光谱指数的功率谱。我们考虑了用于常数和可变耗散因子$γ$的混乱和自然潜力以及估计的标量光谱指数和张量比比率。我们发现,在$ f(r,t)$重力的背景下,可以重新恢复两个拒绝的电位,并适当选择模型参数。此外,可以看出,在温暖的通货膨胀情景中,这两个电势都与普朗克和普兰克次级能量尺度的普朗克2018界限一致。

In this work, we explored warm inflation in the background of $f(R,T)$ gravity in the strong dissipation regime. Considering scalar field for FLRW universe, we derived modified field equations. We then deduced slow-roll parameters under slow-roll approximations followed by power spectrum for scalar and tensor perturbations and their corresponding spectral indices. We have considered Chaotic and Natural potentials and estimated scalar spectral index and tensor-to-scalar ratio for constant as well as variable dissipation factor $Γ$. We found that both the rejected potentials can be revived under the context of $f(R,T)$ gravity with suitable choice of the model parameters. Further, it is seen that within the warm inflationary scenario both the potentials are consistent with Planck 2018 bounds at the Planckian and sub Planckian energy scales.

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