| Monday 24 March 2025 | |
| Events for day: Monday 19 July 2021 |
| 11:00 - 12:00 Journal Club: Experiment & Phenomenology-google meet De Sitter Holography: Fluctuations, Anomalous Symmetry, and Wormholes School PARTICLES AND ACCELERATORS Based on https://arxiv.org/pdf/2106.03964.pdf Abstract: The Goheer-Kleban-Susskind no-go theorem says that the symmetry of de Sitter space is incompatible with finite entropy. The meaning and consequences of the theorem are discussed in the light of recent developments in holography and gravitational path integrals. The relation between the GKS theorem, Boltzmann fluctuations, wormholes, and exponentially suppressed non-perturbative phenomena suggests: the classical symmetry between different static patches is broken; and that eternal de Sitter space - if it exists at all - is an ensemble average. ... 14:00 - 15:00 Weekly Seminar Electrostatic control of spin-valley-layer locking in bilayer transition-metal dichalcogenides School QUANTUM PHYSICS AND MATTER The interplay between spin, valley and layer pseudospin in layered transition-metal dichalcogenides (TMDs) is of fundamental importance in designing multifunctional pseudospintronic devices. In our recent work, we have investigated the quantum transport of spin, valley and layer degrees of freedoms (DOFs) through a magnetoelectric barrier in AB-stacked bilayer TMDs. In this talk, after a short exposition of some preliminaries on the subject, we present some of our main results. The talk would be accessible to the public audience (in physics). |