Swampland Conjectures have attracted quite some interest in the Cosmological Community. They have been shown to have wide ranging implications, like constraints on inflationary models, primordial black holes, etc. to name a few. A particularly revealing insight on dark energy also shows that one can have the dark energy equation-of-state for a quintessence scenario to be significantly different than − 1 after one takes into account the refined dS conjecture. Another interesting issue with the swampland conjectures is that they have been shown to be incompatible with single field inflationary models in GR-based cosmology. In our previous work, we have, however, shown that single field inflationary models are quite compatible with swampland conjectures in their usual string theoretic form in a large class of modified cosmological scenarios. Building on that work, we now show that in modified cosmological scenarios where the early universe expansion was driven by single field inflation, one can have the dark energy equation of state to be significantly different from − 1 even if we just take into account the original dS conjecture, let alone the refined form of that. We thereby show that one does not need to apply a step function approach towards inflation in order to have an observable distinction between constant and non-constant dark energy models in the context of the swampland conjectures.

中文翻译：

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给定沼泽地猜想，一般宇宙学情景中的单场暴胀对暗能量性质的影响

沼泽地猜想在宇宙学界引起了相当大的兴趣。它们已被证明具有广泛的影响，例如对暴胀模型、原始黑洞等的限制，仅举几例。对暗能量的一项特别具有启发性的见解还表明，一个典型场景的暗能量状态方程与 - 1后一个考虑了精化的 dS 猜想。沼泽地猜想的另一个有趣问题是，它们已被证明与基于 GR 的宇宙学中的单场暴胀模型不相容。然而，在我们之前的工作中，我们已经证明，单场暴胀模型在一大类修改后的宇宙学情景中与通常弦理论形式的沼泽地猜想非常兼容。在这项工作的基础上，我们现在表明，在早期宇宙膨胀由单场暴胀驱动的修正宇宙学情景中，暗能量状态方程可能与 - 1即使我们只考虑原始 dS 猜想，更不用说它的精化形式了。因此，我们表明，在沼泽地猜想的背景下，不需要对暴胀应用阶跃函数方法来区分恒定暗能量模型和非恒定暗能量模型。