报告题目：General Constraints on Primordial Isocurvature from the Cosmic Microwave Background and Pulsar Timing Arrays

报告人：杜佩之 特任教授（中国科学技术大学）

报告摘要：The standard cosmological model (ΛCDM model) assumes adiabatic initial conditions for primordial density perturbations. However, many new physics scenarios can deviate from this assumption and generate isocurvature perturbations across a wide range of scales. In this talk, I will present general constraints on large-scale isocurvature (between 10^-4 Mpc^-1 and 10^-1 Mpc^-1) from observation of the Cosmic Microwave Background. Moreover, Pulsar Timing Arrays set stringent limits on isocurvature around 10^6 Mpc^-1 via isocurvature induced gravitational waves.

报告时间：2026年5月19日（周二）10:00

报告地点：仙林园区3-402室

欢迎大家参加！