报告题目:On the Evidence of Dynamical Dark Energy

报告人：郜青

报告时间：2024年12月17日(周二)下午 16:00-17:00

报告地点：浙江工业大学理学楼 二楼师生活动中心

摘要(Abstract)：To elucidate the robustness of the baryon acoustic oscillation (BAO)data measured by the Dark Energy Spectroscopic Instrument (DESl) in capturing the dynamical behavior of dark energy. We assess the model dependence of the evidence for dynamical dark energy inferred from the DESI BAO data. While the DESI BAO data slightly tightens the constraints on model parameters and increases the tension between the Chevallier-Polarski-Linder (CPL) model and the ΛCDM model, we find that the influence of DESI BAO data on the constraint of w0 is small in the SSLCPL model. In comparison to the CPL model, the tension with the ΛCDM model is reduced for the SSLCPL model, suggesting that the evidence for dynamical dark energy from DESl BAO data is dependent on cosmological models. The inclusion of spatial curvature has little impact on the results in the SSLCPL model.

报告人简介(Bio)：郜青，女，教授。2015年12月获华中科技大学理论物理博士学位。2016年05月进入西南大学物理科学与技术学院工作。2018年8月至2019年8月在美国加州理工学院做访问学者。研究方向为引力理论、宇宙学等。目前在国内外期刊上(PLB，PRD，JCAP，APJ，SCPMA，CQG，EPJC，MNRAS等)已发表论文30余篇，其中4篇入选ESI高影响论文。

邀请人：朱涛