| Saturday 10 May 2025 | |
| Events for day: Tuesday 06 May 2025 |
| 11:00 - 13:00 Weekly Seminar The new DESI cosmology results: What we have (not) learned about dark energy School ASTRONOMY Abstract The new Dark Energy Spectroscopic Instrument (DESI) DR2 results have strengthened the possibility that dark energy is dynamical, i.e., it has evolved over the history of the Universe. This has raised the excitement that the first release of the DESI results generated in both cosmology and high-energy physics communities, and if taken at face value, it is the first time that the standard ?CDM model of cosmology has faced a serious observational challenge. In this talk, I will first provide an overview of dynamical dark energy and why we may need it, and will then delve into the DESI findings, explaining what we have learned abo ... 14:00 - 15:00 Weekley SeminarHEPCo GroupGeometric Classical and Quantum Mechanics School PHYSICS Date and time Tuesday, May 6th, 2025 (Ordibehesht 16st, 1404), 2:00 pm (Tehran zone) Location Room C, Floor 2, Farmanieh Building, No. 70, Lavasani St. Link https://www.skyroom.online/ch/schoolofphysics/highenergyseminar Abstract The coupling of space and time that leads to the concept of spacetime is complemented by the Minkowski metric. On the other hand, the coupling of position and momentum that leads to the concept of phase space is complemented by the canonical symplectic form. In this talk, we modify the symplectic geometry of both classical and quantum ... |