三场暴胀中的双峰质量原初黑洞
Bimodal mass primordial black holes in three-field inflation
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中文总结 AI 辅助
本研究提出三场暴胀模型，通过运动学基分离转向与扭转作用，产生双峰功率谱，形成质量分别为约2×10⁻¹²太阳质量和约52太阳质量的原初黑洞，同时解释暗物质与LIGO-Virgo-KAGRA双黑洞质量范围。
中文摘要 AI 辅助
本文研究了具有非正则动能项的三场暴胀中曲率和熵扰动的演化。利用场空间中的运动学基，我们通过其转向速率和非平面扭转来表征背景轨迹。我们还强调了扰动从运动学系统中继承的结构，该结构将转向速率和扭转在扰动相互作用中的不同作用分离开来。我们数值上提出并研究了一个具有中间减速膨胀阶段的三相模型，在该阶段中，两个分离的瞬态时期放大了两类不同的模式，产生了双峰曲率功率谱。这种双峰功率谱导致了具有两个特征质量的原初黑洞的形成，$M_1\sim2\times10^{-12}M_\odot$ 和 $M_2\sim52M_\odot$，同时解释了暗物质和LIGO-Virgo-KAGRA双黑洞质量范围。
英文摘要
In this paper, we study the evolution of curvature and entropy perturbations in three-field inflation with non-canonical kinetic terms. Using the kinematic basis in field space, we characterize the background trajectory through its turning rate and non-planar torsion. We also emphasize the inherited structure of perturbations from the kinematic system, which detaches the distinct roles of turning rate and torsion in the interactions among perturbations. We present and study numerically a three-phase model with an intermediate decelerated expansion stage in which two separated transient epochs amplify two distinct families of modes, generating a double-peaked curvature power spectrum. This double-peaked power spectrum leads to the formation of primordial black holes with two characteristic masses, $M_1\sim2\times10^{-12}M_\odot$ and $M_2\sim52M_\odot$ explaining, simultaneously, both dark matter and the LIGO-Virgo-KAGRA binary black hole mass range.
发表机构
- Shahid Beheshti University（沙希德·贝赫什蒂大学）
- Sharif University of Technology（谢里夫理工大学）
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