報(bào)? 告?人：王東剛?博士（劍橋大學(xué)）
主? 持 人：王賽?副研究員? （中國科學(xué)院高能物理研究所）
報(bào)告時(shí)間：2024年6月21日（周五），上午10:00
報(bào)告地點(diǎn)：圖書館樓319會(huì)議室
報(bào)告摘要：
Our understanding of the primordial Universe largely depends on the information from spatial correlations of cosmic-scale matter distributions. Recently, the advances of the “cosmological bootstrap” program offers new perspectives and powerful tools to study these cosmological correlators. There the observables can be fully determined by basic principles, which suggests a timeless description for our Universe. In this talk, I will first review the exciting developments of this new direction. Then I will apply the bootstrap approach to systematically classify the leading observational target — primordial non-Gaussianities (bispectrum) from cosmic inflation, incorporating three scenarios: i) single field inflation; ii) cosmological colliders; iii) multi-field inflation. Interestingly, the bootstrap analysis predict new phenomenologies, which are testable in even in today’s cosmological surveys. In the end, I will present a comprehensive data analysis of these predictions using the latest CMB observation from Planck satellite. As the first attempt, we bridge the gap between theories and observations, and demonstrate how the cosmological bootstrap may lead us to potential discoveries of new physics in the primordial Universe.
個(gè)人簡介:?
Dong-Gang Wang is a postdoctoral researcher as a Rubicon Fellow at the Department of Applied Mathematics and Theoretical Physics in the University of Cambridge, UK. Before that, he did his PhD in Leiden University in the Netherlands as a de Sitter Fellow from 2016 to 2020. Before that, he was a master student in USTC from 2013 to 2016. His research mainly focuses on an emerging?interdisciplinary direction that applies theoretical methods of high energy physics in the studies of the primordial Universe.
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