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SUMMARY:General Constraints on Primordial Isocurvature from the Cosmic Mic
 rowave Background and Pulsar Timing Arrays
DTSTART;VALUE=DATE-TIME:20260312T030000Z
DTEND;VALUE=DATE-TIME:20260312T040000Z
DTSTAMP;VALUE=DATE-TIME:20260512T084600Z
UID:indico-event-4814@indico-tdli.sjtu.edu.cn
DESCRIPTION:Speakers: Peizhi Du（杜佩之） (University of Science and 
 Technology of China)\n\nAbstract: The standard cosmological model (ΛCDM 
 model) assumes adiabatic initial conditions for primordial density perturb
 ations. However\, many new physics scenarios can deviate from this assumpt
 ion and generate isocurvature perturbations across a wide range of scales
 . In this talk\, I will present general constraints on large-scale isocurv
 ature (between 10^-4 Mpc^-1 and 10^-1 Mpc^-1) from observation of the Co
 smic Microwave Background. Moreover\, Pulsar Timing Arrays set stringent l
 imits on isocurvature around 10^6 Mpc^-1 via isocurvature induced gravitat
 ional waves.Biography: Peizhi Du is currently a tenure-track professor a
 t the University of Science and Technology of China. He earned his bachel
 or's degree from Nanjing University\, and his PhD from the University of 
 Maryland. He was a postdoctoral associate at Stony Brook University and Ru
 tgers University. His research focuses on particle physics phenomenology\
 , including direct detection of light dark matter as well as astrophysical
  and cosmological probes of physics beyond the Standard Model. Online Mee
 ting Room：https://meeting.tencent.com/dm/xQWohz5WNEZvID：390131531\n\nh
 ttps://indico-tdli.sjtu.edu.cn/event/4814/
LOCATION:Tsung-Dao Lee Institute/N6F-N600 - Lecture Room (Tsung-Dao Lee In
 stitute)
URL:https://indico-tdli.sjtu.edu.cn/event/4814/
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