| Sunday 19 January 2025 | |
| Events for day: Wednesday 29 November 2023 |
| 11:00 - 12:00 Wednesday Weekly Seminar - meeting The fate of the black hole School PARTICLES AND ACCELERATORS Abstract: In this talk, we begin with a concise overview of the history of black holes. Then, we dive into the physics of black holes using AdS/CFT duality. Lastly, we explore how an old black hole can turn into a white hole by emitting a baby universe. Indico Link https://indico.hep.ipm.ir/e/h.zolfi Meeting Place: Seminar Room, School of Particles and Accelerators, IPM Link to join virtually: https://meet.google.com/fnv-dfkk-ghb ... 12:45 - 13:45 Geometry and Differential Equations Seminar On Injectivity and Nuclearity for Operator Spaces School MATHEMATICS We investigate some properties such as nuclearity, local lifting property and weak expectation property in the operator space. Venue: Niavaran, Lecture Hall 1 ... 13:30 - 15:00 Weekly Seminar Influence of Magnetic Fields on the Gas Rotation in the Galaxy NGC 6946 School ASTRONOMY Magnetic fields can play an important role in the energy balance and formation of gas structures in galaxies. However, their dynamical effect on the rotation curve of galaxies is immensely unexplored. We investigate the dynamical effect of the known magnetic arms of NGC 6946 on its circular gas rotation traced in H I, considering two dark-matter mass-density models, ISO, and the universal NFW profile. We used a three-dimensional model for the magnetic field structure to fit the modeled rotation curve to the observed data via a ? minimization method. The shape of the H I gas rotation curve is reproduced better including the effect of the magne ... 14:00 - 15:00 Combinatorics and Computing Weekly Seminar Automata-theoretic Approaches for Planning with Complex Goals in Robotics School MATHEMATICS As the role of robots in human life is broadening, roboticists face new planning problems that are beyond the classical motion planning problem, which aims to plan a sequence of actions that moves a robot from a source location to a goal location. This talk presents several new planning problems with complex goals. All these problems are solved using automata-theoretic approaches. In these approaches, an optimal plan is synthesized on a product automaton that is constructed from a discrete structure that models all possible behaviors of the system and an automaton that specifies all the desired behaviors for planning. The first problem aims t ... 14:00 - 15:00 Weekly Seminar Information Propagation and Coordination in Collective Motion School NANO SCIENCES Collective motion as a form of collective behavior is a fascinating phenomenon spanning many length and time scales. Crucial for understanding the benefits of collective behavior is understanding the mechanism of information propagation in the collective. In this talk, I explore two largely unexplored areas: collective information processing in heterogeneous environments and the spreading of information during the initiation of motion. Our findings reveal that a limited attention capacity, which significantly reduces connectivity among individuals, is highly beneficial for global coordination. However, collectives outperform isolated individu ... 15:30 - 17:00 Geometry and Topology Weekly Seminar Bernoulli's Free Boundary Problem and Some Recent Results for the p-Laplace Operator School MATHEMATICS The (one-phase) Bernoulli problem deeply influenced the modern free boundary regularity theory and is still an object of intensive research. Free boundary problems are often PDE-described problems with a priori unknown (free) interfaces or boundaries. Such types of problems appear in Physics, Geometry, Probability, Biology, or Finance, and the study of solutions and free boundaries uses methods from PDE, Calculus of Variations, and Geometric Measure Theory. We first review the very classical theory, which is about how to understand the regularity of free boundaries. Then, we present some recent results for the Bernoulli problem with the p-Lap ... 17:30 - 19:00 Algebraic Geometry Biweekly Webinar Generalized Abundance and Nonvanishing: Remarks and Open Questions School MATHEMATICS The Nonvanishing Conjecture and the Abundance Conjecture are longstanding open problems in the Minimal Model Program. I am going to present some unexpected generalizations which appeared in the literature in the last few years and to discuss a few variants of them. https://zoom.us/join Meeting ID: 9086116889 Passcode: 362880 Venue: , (Online) ... |