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arXiv 2609.11221gr-qchep-th

约束修正质量-视界宇宙学通过原初暴胀可观测量

Constraining Modified Mass-to-Horizon Cosmology Through Primordial Inflationary Observables

A. Sheykhi, G. G. Luciano, A. Benkrane

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中文总结 AI 辅助

本研究在广义质量-视界关系修正宇宙学中分析慢滚暴胀,发现Starobinsky模型对参数n高度敏感,并通过对标量功率谱归一化施加0.960≤n≤1.040的严格约束,表明暴胀可作为广义视界热力学的灵敏探针。

中文摘要 AI 辅助

我们研究了一个受广义质量-视界关系(MHR)启发的修正宇宙学框架中的慢滚暴胀,该关系为 $M=\gamma {c^2 L^n}/{G}$,其中 $n$ 是实参数,$\gamma$ 是量纲常数。利用 Padmanabhan 的涌现范式,我们推导了平坦 FRW 宇宙的修正 Friedmann 方程,并在慢滚近似下分析了正则标量场(暴胀子)的动力学。我们研究了幂律势和 Starobinsky 势下由此产生的暴胀现象学。对于幂律势,MHR 修正未能使这些模型与当前对 $r$ 和 $n_s$ 的 CMB 约束相协调。相反,Starobinsky 暴胀对偏离 $n=1$ 表现出显著的敏感性。微扰分析($n=1+\Delta$)给出了对暴胀可观测量的修正。我们观察到,在固定 Starobinsky 处方下,标量功率谱归一化对 $N=60$ e 折数施加了严格的约束 $0.960 \lesssim n \lesssim 1.040$。这比谱指数界限要严格得多。我们的结果确立了暴胀,特别是类似 Starobinsky 的模型,作为广义视界热力学和偏离标准 MHR 标度的灵敏探针。

英文摘要

We investigate slow-roll inflation in a modified cosmological framework inspired by a generalized mass-to-horizon relation (MHR), $M=γ{c^2 L^n}/{G}$, where $n$ is a real parameter and $γ$ a dimensional constant. Using Padmanabhan's emergence paradigm, we derive the modified Friedmann equations for a flat FRW universe and analyze the dynamics of a canonical scalar field (inflaton) under the slow-roll approximation. We study the resulting inflationary phenomenology for power-law and Starobinsky potentials. For power-law potentials, the MHR modification fails to reconcile these models with current CMB constraints on $r$ and $n_s$. In contrast, Starobinsky inflation exhibits significant sensitivity to deviations from $n=1$. A perturbative analysis ($n=1+Δ$) yields corrections to inflationary observables. We observe that the scalar power-spectrum normalization, under a fixed-Starobinsky prescription, imposes the stringent constraint $0.960 \lesssim n \lesssim 1.040$ for $N=60$ efolds. This is considerably tighter than spectral-index bounds. Our results establish inflation, particularly Starobinsky-like models, as a sensitive probe of generalized horizon thermodynamics and departures from standard MHR scaling.

发表机构

  • Shiraz University(设拉子大学)
  • Universitat de Lleida(莱里达大学)
  • University Kasdi Merbah Ouargla(卡兹迪·梅尔巴乌尔格拉大学)

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