Gravitational waves from first order phase transition during inflation

by Prof. Haipeng An (Tsinghua U.)

Tuesday 29 Dec 2020, 10:30 → 11:30 Asia/Shanghai

B105 (CHEP)

I will talk about the properties of the gravitational wave (GW) signals produced by first order phase transitions during the inflation era. I will show that the power spectrum of the GW oscillates with its wave number. This signal can be observed directly by future terrestrial and spatial gravitational wave detectors and through the B-mode spectrum in CMB. This oscillatory feature of GW is generic for any approximately instantaneous sources occurring during inflation and is distinct from the GW from phase transitions after the inflation. The details of the GW spectrum contain information about the scale of the phase transition and the later evolution of the universe. About the Speaker: 2002-2006 Undergraduate student at Peking University 2006-2011 Ph.D. student at University of Maryland 2011-2014 Postdoc at the Perimeter Institute for Theoretical Physics 2014-2017 Postdoc (Walter Burke Fellow) at Caltech 2017-2019 Assistant professor at Tsinghua University 2019-now Associate professor at Tsinghua University Research interests: Particle physics and cosmology ============================================================== Both online and on-site meeting are available. On-site meeting is in room B105, school of physics, Peking University. Online Tencent/VOOV meeting: link: https://meeting.tencent.com/s/SlkvS5w94caG ID: 784 884 071