报 告 人：蒋赟 (IFT, UAM-CSIC)
地 点：物理学院 LE201
时 间：2018年11月5日（星期一 15:00-17:00 ）
报告摘要：
Although the Higgs boson has been discovered at CERN’s Large Hadron Collider, it is still not yet confirmed if electroweak
(EW) symmetry breaking realized in Nature follows the simplest parametrization described in the Standard Model (SM)
of particle physics. Electroweak phase transition (EWPT), a process where the hot early Universe that is commonly assumed
to respect the EW symmetry down to the cold present Universe spontaneously breaking the EW symmetry, can potentially be
first-order in many beyond-SM theories, leading to the success of explaining the observed cosmic matter-antimatter asymmetry of the early Universe. Important benchmark scenarios in the context of two-Higgs-doublet model will be presented.
To make reliable predictions it is necessary to develop the precision EWPT study. In the talk we will review several standard
methods used to improve the calculations of the finite temperature scalar potentials. Following a systematic assessment, we will
demonstrate that spontaneously broken symmetries at zero-temperature are not necessarily restored at high temperature. This
novel history of the Universe would have many cosmological implications and collider signatures that we will discuss.
报告人蒋贇，现为西班牙马德里自治大学理论物理中心(IFT, UAM-CSIC) 高级研究员(Superior Researcher)。2015 年获得美国加州大学戴维斯分校博士学位，后在丹麦玻尔研究所从事博士后研究工作。博士期间先后获得美国自然科学基金资助的 LHC Theory Initiative 研究生奖学金以及国家留学基金委颁发的国家优秀自费留学生奖学金等荣誉。 蒋博士长期从事超标准模型物理在对撞机上的唯象学研究，在希格斯物理、超对称、暗物质、额外维时空以及标准模型有效场理论等方向完成多项重要的工作， 目前致力于研究早期宇宙相关联的粒子宇宙学问题。已在Phys. Rev. Lett.等国际一级学术刊物和国际会议会刊共发表 26 篇论文，总引用数逾1200次，还参与了科普图书《图解宇宙与量子理论》和《图解量子论》的翻译审校工作。
