轻暴胀子的现状：从暴胀到实验室
Status of light inflaton: from inflation to laboratory
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中文总结 AI 辅助
研究基于ACT等最新暴胀限制及对撞机等实验结果，探讨轻暴胀子情景可行性，假设暴胀子四次方势确定参数空间区域，推导相关限制，还探讨再加热期间暗物质产生前景。
中文摘要 AI 辅助
我们根据阿塔卡马宇宙学望远镜（ACT）最新的暴胀限制，以及对撞机和强度前沿实验寻找亚GeV质量的弱耦合轻标量的限制，研究轻暴胀子情景的可行性。假设暴胀子四次方势，我们确定与ACT观测一致的参数空间区域，并利用NA62、KOTO、BaBar、Belle、LHCb、MATHUSLA、FASER2、SHiP和中性介子振荡的结果推导对暴胀子质量和暴胀子-希格斯混合的限制。我们还探讨了在此框架内再加热期间暗物质产生的前景，同时与暴胀可观测量保持一致。
英文摘要
We investigate the viability of the light inflaton scenario in light of the latest inflationary constraints from the Atacama Cosmology Telescope (ACT), together with bounds from collider and intensity-frontier experiments searching for a feebly coupled light scalar with a sub-GeV mass. Assuming a quartic inflaton potential, we identify the region of parameter space consistent with the ACT observations and derive constraints on the inflaton mass and inflaton-Higgs mixing using results from NA62, KOTO, BaBar, Belle, LHCb, MATHUSLA, FASER2, SHiP, and neutral meson oscillations. We also explore the prospects for dark matter production during reheating within this framework, while remaining consistent with the inflationary observables.
