具有隐藏域凝聚的标度不变引力中的暗物质
Dark matter in scale-invariant gravity with hidden-sector condensation
AI总结：
该研究基于经典标度不变二次引力耦合强相互作用隐藏域的框架，将电弱标度起源、宇宙暴胀和暗物质统一，推导三类暗物质候选者的遗迹丰度。
AI中文摘要：
电弱标度的起源、宇宙暴胀和暗物质常被视为粒子物理与宇宙学标准模型之外的独立问题。本研究探索它们源于经典标度不变二次引力与强相互作用隐藏域耦合的共同基础框架的可能性。R²项自然实现Starobinsky暴胀，隐藏域的禁闭动力学产生普朗克标度，并通过引力诱导的希格斯质量产生机制触发电弱对称性破缺。与R²项相关的标量自由度随后通过与能量动量张量的普适耦合使可见域与隐藏域再加热，导致隐藏域态的引力冻结入产生。研究隐藏域的三种代表性实现，其中暗物质候选者为隐藏η'介子、隐藏矢量玻色子或带电隐藏π介子，并推导对应暗物质与暗辐射的遗迹丰度。
英文摘要：
The origin of the electroweak scale, cosmic inflation, and dark matter are often treated as independent problems beyond the Standard Models of particle physics and cosmology. In this work, we explore the possibility that they instead arise from a common underlying framework based on classically scale-invariant quadratic gravity coupled to a strongly interacting hidden sector. The $R^2$ term naturally realizes Starobinsky inflation, while confinement in the hidden sector dynamically generates the Planck scale and triggers electroweak symmetry breaking through a gravitationally induced Higgs mass generation mechanism. The scalar degree of freedom associated with the $R^2$ term subsequently reheats both the visible and hidden sectors through universal couplings to the energy-momentum tensor, leading to the gravitational freeze-in production of hidden-sector states. We investigate three representative realizations of the hidden sector in which the dark matter candidate is either a hidden $η'$ meson, a hidden vector boson, or charged hidden pions, and derive the corresponding dark matter and dark radiation relic abundances.
