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Axion-like?particle?inflation?and?dark?matter

作者:点击次数:更新时间:2021年04月22日

报告题目:Axion-like particle inflation and dark matter

报告人:程伟

报告时间:2021423号下午1400

报告地点:重庆大学虎溪校区理科楼欧冠体育_欧冠体育买球LE201

邀请人:边立功

报告人介绍:

程伟,20196月博士毕业于重庆大学,20197月至今为中国科学院理论物理研究所博士后。研究工作主要涉及宇宙学暴胀、电弱相变、暗物质、B物理。

目前在国际主流高能物理杂志上发表论文10余篇,总引用100余次。

报告摘要:

We propose a generalized natural inflation (GNI) model to study axion-like particle (ALP)  inflation and dark matter (DM). GNI contains two additional parameters (n1, n2) in comparison with the natural inflation, that make GNI more general. The n1 build the connection between GNI and other ALP inflation model, n2 controls the inflaton mass. After considering the cosmic microwave background and other cosmological observation limits, the model can realize small-field inflation with a wide mass range, and the ALP inflaton considering here can serve as the DM candidate for certain parameter spaces.