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arXiv 2603.04590gr-qc
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暴胀时期的动力学黑洞

Dynamical black holes in the inflationary epoch

Instituto Argentino de Radioastronomía (IAR, CONICET/CIC/UNLP)(阿根廷射电天文研究所)

Ertola Urtubey Milos, Daniela Pérez

AI总结:

研究暴胀时期黑洞的演化,结合广义McVittie几何,分析黑洞与宇宙背景的耦合、霍金蒸发和辐射吸积的影响,确定黑洞质量上限。

摘要:

我们研究了暴胀时期存在的黑洞的演化,假设它们通过广义McVittie几何动态耦合到宇宙背景中,使得其引力质量随宇宙尺度因子变化。采用Starobinsky的R²暴胀模型,分析了随后的宇宙时期(暴胀、辐射、物质、暗能量)中宇宙耦合、霍金蒸发和辐射吸积的综合作用。要求黑洞事件视界始终小于粒子视界,得出质量参数的上限。辐射时期内的辐射吸积进一步限制参数空间,防止快速增长。霍金蒸发设定了初始质量的下限,以确保通过暴胀期。我们发现只有在暴胀期间形成于狭窄初始质量范围内的黑洞才能持续至今,达到最大质量约为M(t₀) ≈ 1.043×10⁻³ M☉。

英文摘要:

We investigate the evolution of black holes present during the inflationary epoch, assuming they are dynamically coupled to the cosmological background through a generalized McVittie geometry, such that their gravitational mass scales with the cosmic scale factor. Adopting Starobinsky's $\mathcal{R}^2$ inflation model, we analyse the combined effects of cosmological coupling, Hawking evaporation and radiation accretion during the subsequent cosmic eras: inflation, radiation, matter, and dark energy. Requiring the black hole event horizon to remain smaller than the particle horizon at all times yields an upper bound on the mass parameter. Radiation accretion during the radiation era further constrains the parameter space to prevent runaway growth. Hawking evaporation sets a lower bound on the initial mass to ensure survival through inflation. We find that only black holes formed within a narrow initial mass range during inflation can persist to the present day, reaching a maximum mass of $M(t_0) \simeq 1.043\times10^{-3} M_\odot$.

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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