In this talk, we revisit motivation from String Theory for new phases of cosmology – prior to inflation. Cosmic inflation offers a causal way to predict initial conditions for the growth of structure and density fluctuations in the cosmic microwave background and large-scale structure formation. However, asymptotic de Sitter space possesses a past cosmological (physical) singularity implying the theory cannot be complete. In this talk, the speaker will discuss how investigations into Quantum ChromoDynamics (QCD) led to an idea that could prevent the past singularity, or at least give a way to calculate predictions in real time on curved space-time backgrounds. This paradigm would lead to cosmologies that do not begin (Big Bang) or repeat (Ekpyrotic/Cyclic scenario) but instead begin from sitting around – a period of “lingering”, as first considered by Lemaître.
時間：2023.11.28(二) 22:00~23:20
頻道：Zoom ID:421-480-1692 ← cosmology
講者：Scott Watson (Syracuse University, US)
語言：英語
免費講座，歡迎參加
【此屬轉載信息，以主事單位發布為準】
“Copernicus Webinar and Colloquium Series”: To promote scientific discussions during this pandemic, they are organizing an online seminar series, i.e. Copernicus Webinar Series, seeking the most outstanding speakers to introduce innovative ideas and important progress in the field of gravity and cosmology. This series is named after the famous Polish Astronomer, Nicolaus Copernicus, whose discovery eventually marked the dawn of modern science.
歐洲核子研究組織CERN
此活動由歐洲核子研究組織CERN主辦。
