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- 17.03., Robert Plantey (NTNU): Renormalization group evolution analysis of the gauged Froggatt-Nielsen mechanism in 2HDMs
Abstract: There are many free parameters in the flavour sector of the Standard Model which exhibit hierarchies. From a theoretical point of view this situation, known as the flavour puzzle, is not satisfying and the Froggatt-Nielsen mechanism aims to partially address it. In this model, hierarchies in the flavour parameters can be removed at the cost of introducing a new scalar field and heavy vector-like fermions. In this talk, I will present my master thesis which focused on building a realistic, theoretically consistent 2-Higgs-doublet model equipped with the Froggatt-Nielsen mechanism. 23.03., Gabriela Barcenas Enrique (Universidad de Guanajuato; NTNU): Self-gravitating Scalar Field Dark Matter
Abstract: Diverse evidence has proved the existence of dark matter in the universe, with the arrival of accurate cosmological and astrophysical observations, some as part of the scientific community consider it the most interesting problem in modern physics. We are no able to discard the existence of new particles with properties that may look exotic in comparison with the particles that constitute all that we know as ordinary matter. The scalar field dark matter is a model that considers the existence of a scalar field, in which the principal parameter is a very small mass. This model has displayed consequences in the formation of cosmological structure. Furthermore, scalar field dark matter presents a solution to galactic scales. We review a particular configuration of self-gravitating scalar field dark matter with the aim of presenting a viable candidate to describe the behaviour of the galactic centre. We present an approach to test this configuration with recent observations from the closest stellar cluster to Sgr A*, moreover, we expect to find new constrictions for the exact quantity for the mass of the scalar field.
slidesslides- 30.03. Yan-Chuan Cai (University of Edinburgh, NTNU): Astrophysics and Cosmology with the Cosmic Web
Abstract: On large scales of our observable Universe, the distribution of matter follows a web-like pattern, consisting of knots, filaments, sheets and voids. The cosmic-web is non-Gaussian, containing valuable information about astrophysics and cosmology. I will summarise recent research activities in trying to extract some of this information, and how we can use observations of the cosmic-web to tackle some of the major problems in cosmology.
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