| Friday 19 April 2024 | |
| Events for day: Wednesday 29 September 2021 |
| 11:00 - 12:00 Wednesday Weekly Seminar - google meet Entanglement Wedge Cross Section in Holographic Excited States School PARTICLES AND ACCELERATORS Abstract: In this talk, we will briefly review some of the measures of entanglement and holographic proposals for computing them. Then we will be focus on entanglement wedge cross-section (EWCS) and evaluate this holographic correlation measure in asymptotically AdS geometries which are dual to boundary excited states. We describe a perturbative analysis for calculating EWCS between the vacuum and other states in symmetric configurations and present some analytical results. Finally, we discuss how these results are consistent with the behavior of other correlation measures including the holographic mutual information. arXiv:2105.12476< ... 13:30 - 15:00 Weekly Seminar (Online) The Star Formation History of Andromeda VII Derived from Long-period Variable Stars https://www.skyroom.online/ch/soa/weekly-seminar School ASTRONOMY Abstract We have examined the star formation history (SFH) of Andromeda VII (And VII), the brightest and most massive dwarf spheroidal (dSph) satellite of the Andromeda galaxy (M31). Although M31 is surrounded by several dSph companions with old stellar populations and low metallicity, it has a metal-rich stellar halo with an age of 6–8 Gyr. This indicates that any evolutionary association between the stellar halo of M31 and its dSph system is frail. Therefore, the question is whether And VII (a high-metallicity dSph located ?220 kpc from M31) can be associated with M31?s young, metal-rich halo. Here we perform the first reconstruction ... 14:00 - 15:00 Weekly Seminar Condensed Matter and Statistical Physics Group Evolutionary Dynamics on Complex Networks: A Mean Field Approach School PHYSICS Abstract: Mathematical models of evolution have attracted considerable attention in recent years. The main ingredients of such models are "selection", "reproduction", and "mutation". Furthermore, population structure plays an important role in evolution. "Evolutionary Graph Theory" is a powerful tool to study the interplay between population structure and evolutionary dynamics. In this talk, we try to give a brief review of this theory and then we mention to a number of recent results, among them is the effect of network topology on fixation time and fixation probability of mutants. Furthermore we propose a mea ... |