报告题目：Hubble tension, dark energy, and modified gravity

报告人：王少江 副研究员（中国科学院理论物理研究所）

报告摘要：Recently, various cosmological tensions have arisen for the standard model of cosmology. For the Hubble-constant $H_0$ tension, we have proposed a series of no-go "theorems" to largely rule out purely late-time solutions of any non-metric gravity. For the intercept $a_B$ tension we proposed from the magnitude-redshift relation, we have developed a diagnostic for systematics of supernovae to narrow down the formulation of the Hubble tension and the evidence of dynamical dark energy. For recent hint of dynamical dark energy, we have proposed a specific interacting dark matter-dark energy model to mimic the phantom crossing as a mis-modeling artifact, and we also resolve the $\Omega_m$ tension among Planck-CMB, DESI-BAO, and DES-SNe for both $\Lambda$CDM and $w_0w_a$CDM models. In the end, we further generalize our model to address the Hubble-variation $\delta H_0$ tension with novel evidence of going beyond the general relativity in the $\Lambda$CDM model.

报告时间：2026年9月15日（周二）15:00

报告地点：紫台仙林园区3-402室

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