BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Probing new physics effects of the first-order phase transition DTSTART;VALUE=DATE-TIME:20250311T023000Z DTEND;VALUE=DATE-TIME:20250311T033000Z DTSTAMP;VALUE=DATE-TIME:20260417T213500Z UID:indico-event-25343@indico.ihep.ac.cn DESCRIPTION:Speakers: Katsuya Hashino (Fukushima College)\nIn the Higgs p otential of the standard model\, it is known that the electroweak phase tr ansition in the early universe is a crossover. However\, the phase transit ion can occur as first-order when new physics effects contribute to the po tential. If the first-order phase transition took place in the early unive rse\, the graitational waves are produced by bubble collision. Since the e nergy of gravitational waves depend on the shape of the potential\, it may be possible to explore the new physics effects in the potential through t heir observations. However\, the spectrum of gravitational wave from first -order phase transition has some theoretical uncertainties.\nIn this talk\ , we focus on some models beyond the standard model as an example\, and di scuss testaibility of them through the obseration of graitational wave. We take into account theoretical uncertainties\, particularly those arising from renormalization group running effects\, in the GW spectrum and discus s how precisely new physics effects can be probed.\n\nBio:\nKatsuya Hashin o received his Ph. D from University of Toyama in 2019\, and is now an ass istant professor at Fukushima College. He has worked at Osaka University\, Peking University and Tokyo University of Science as a postdoc. His main interest is Higgs physics. Especially\, he has focused on the dynamics of electroweak phase transitions in the early Universe.\n\n请线下参加报 告的外单位老师、同学注册时填写个人信息（中文姓名 、身份证号码及手机号码），用于预约进入物理学院。\n https://indico.ihep.ac.cn/event/25343/ LOCATION:B105 (CHEP) URL:https://indico.ihep.ac.cn/event/25343/ END:VEVENT END:VCALENDAR