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SUMMARY:Gravitational Waves from Reheating: Messengers of the Pre-BBN Univ
 erse
DTSTART:20250626T030000Z
DTEND:20250626T040000Z
DTSTAMP:20261010T144100Z
UID:indico-event-4247@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Yong Xu (徐勇） (University of Bonn)\n\nAbstract:
  The well-established theory of Big Bang Nucleosynthesis (BBN) implies th
 at our universe must have been thermalized prior to this epoch. However\,
  cosmic inflation leaves the universe cold and dominated by vacuum energy 
 at its end. The subsequent reheating phase\, which connects inflation to t
 he radiation-dominated era preceding BBN\, plays a pivotal role in shaping
  the universe’s thermal history. This transition impacts key processes s
 uch as dark matter production\, cosmic phase transitions\, and baryogenesi
 s. Despite its significance\, the reheating era remains one of the most ob
 servationally challenging epochs in cosmology.  In this talk\, I will pre
 sent recent advances in the study of stochastic gravitational waves (GWs) 
 generated directly during reheating through graviton emission. I will demo
 nstrate how the resulting GW background\, as part of the landscape of cosm
 ic messengers\, offers a unique and direct probe of the pre-BBN universe.B
 iography：XU Yong received his Ph.D. from the University of Bonn in 2022 
 and is currently a postdoctoral researcher at the Mainz Institute for Theo
 retical Physics (MITP)\, University of Mainz. His research focuses on the 
 intersection of particle physics and cosmology\, including model building 
 for cosmic inflation\, analyzing the dynamics of reheating\, advancing the
 oretical predictions of gravitational waves from graviton generation\, and
  developing novel scenarios for dark matter production and baryogenesis in
  the early universe. He has authored 24 research publications to date and 
 was recently awarded a Trottier Space Institute Fellowship at McGill Unive
 rsity\, starting in October 2025.Alternative online link：https://meeting
 .tencent.com/dm/4d7Diz7hWLgdID: 298725804     Password：123456\n\nhttp
 s://indico-tdli.sjtu.edu.cn/event/4247/
LOCATION:Tsung-Dao Lee Institute/N6F-N600 - Lecture Room (Tsung-Dao Lee In
 stitute)
URL:https://indico-tdli.sjtu.edu.cn/event/4247/
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