Light in photonic moiré lattices. Watching Pythagorean triples
Speaker: Vladimir Konotop (Faculty of Sciences, University of Lisbon).
Speaker: Vladimir Konotop (Faculty of Sciences, University of Lisbon).
By Ricardo Luz (LIP).
Por Rui A. Pita Perdigão (Meteoceanics Interdisciplinary Centre for Complex System Science; CCIAM – cE3c; Institute of Telecommunications, Physics of Information and Quantum Technologies Group).
Our planet is a complex coevolutionary system involving a coherent diversity of processes and interactions across multiple spatio-temporal scales and domains. Albeit its dynamical complexity, core fundamental principles regulate individual and cooperative processes and interactions, ultimately relating to the overall system dynamics.
Speaker: Ana Mourão (Departamento de Física e CENTRA - Centro de Astrofísica e Gravitação, Instituto Superior Técnico, Universidade de Lisboa).
Por Daniel Galaviz (FCUL/LIP).
Speakers: Pedro Garcia (CENTRA/FCUL) & João Silvestre (CENTRA/IST).
Por Emílio Franco (IST).
Abstract: While it is well known that the moduli space of G-bundles over a smooth projective curve is compact, it is not the case for an arbitrary base variety. This motivated the definition of G-sheaves by Gomez and Sols who proved that their moduli space is a compactification of the moduli space of G-bundles. In this talk I will study the deformation and obstruction theory of these objects when G is either the symplectic or the orthogonal group.
O Prémio Breakthrough em Física Fundamental 2020, um dos mais prestigiantes em Física, foi atribuído ao projeto Event Horizon Telescope (EHT) e a cada um dos 347 membros, incluindo o português Hugo Messias, antigo aluno da Ciências ULisboa e atualmente investigador do Instituto de Astrofísica e Ciências do Espaço. Hugo Messias foi ainda galardoado este ano com o prémio GQ Men of the Year, na categoria ciência.
Por Benoît Merlet (Laboratoire Paul Painlevé, Université de Lille).
Por Clément Cancès (Inria Lille - Nord Europe).
Abstract: We present an original model for immiscible two-phase mixtures. This model can be interpreted as the generalised gradient flow of the same energy as for the classical degenerate Canh-Hilliard model, but for a different geometry. Our model is shown to dissipate faster. Existence of weak solutions is established based on the convergence of a JKO semi discretization (joint work with Flore Nabet and Daniel Matthes).