| Friday 19 April 2024 | |
| Events for day: Tuesday 26 April 2022 |
| 14:00 - 15:00 Weekly Seminar HEPCo Group Non-Gaussianity and Secondary Gravitational Waves from Primordial Black Holes Production in alpha-attractor Inflation School PHYSICS Date and time Tuesday, 26th of April, 2022 (6th of Ordibehesht, 1401), 2:00 pm (Tehran zone) Link https://us02web.zoom.us/j/83538126663?pwd=VTNQWVpOdDZ1ajAvbVI1WklKODZGUT09 Meeting ID: 835 3812 6663 Passcode: 785277 Abstract We study the non-Gaussianity and secondary Gravitational Waves (GWs) in the process of the Primordial Black Holes (PBHs) production from inflation. In our work, we focus on the $alpha$-attractor inflation model in which a tiny bump in the inflaton potential enhances the amplitude of the curvature perturbations at some scales and conse ... 16:30 - 18:00 Algebraic Geometry Biweekly Webinar What is K-stability? School MATHEMATICS K-stability is an algebraic notion introduced by Tian and Donaldson to characterise which Fano manifolds admit a Kähler-Einstein metric. There are various equivalent definitions for K-stability, amongst them the more recent ones are based on valuative criteria and are more useful from a birational point of view. In this talk, I will give an introduction to the subject, from a birational viewpoint, and explain some key questions and developments in the field, mostly around methods of verifying K-stability. This is based on joint work with Ziquan Zhuang. https://zoom.us/join Meeting ID: 9086116889 Passcode: 362880 < ... |