Obiettivo The proposed project belongs to the Field of bran world physics and aims tale study of new mechanisms in cosmology and local solutions, In the first part of the proposed work, one task will be the investigation of the effective generic bran world dynamics of five-dimensional Einstein-Gauss-Bonnet gravity and the other will be the cosmological consequences of the above, model, when the intrinsic curvature term is Included in the brine action. Using the exterior calculus techniques, the induced bran world modified Einstein dynamics will be derived, and the existence of a (modified) four-dimensional Schwarz child solution will be sought for. This effective gravitational system of equations will not be closed, thus, more than, one four dimensional solutions of particular symmetry will exist, depending on the. Boundary conditions, i.e. on the embedding of the brine art the bulk. When including the four-dimensional scalar curvature in the, action the new Hubble equation for cosmology will be derived, the asymptotic regimes (early-late universe) will be considered, and comparison, with other, simpler cosmologies will bell exhibited. Relation with real universe data (nucleosynthesis, cosmic microwave background radiation, cosmological perturbations) will be attempted. Generalizing diatonic Gauss-Bonnet terms will be also considered according to the above lines, A second line of activity of the proposed project will be directed towards the study, through explicit solutions, of the mechanism of energy exchange between brine and bulk, when bulk and/or brine scalar fields are considered, additionally to the five-dimensional Einstein gravity. Based on the Israel, matching, conditions for the metric and the scalar fields, the modified dynamics of the bran world universe will be. Derived and studied, according to the influx or the outflow of energy. The analysis will be performed partially analytically and partially numerically. Global phase Campo scientifico natural sciencesphysical sciencesrelativistic mechanicsnatural sciencesphysical sciencesastronomyastrophysicsdark matternatural sciencesphysical sciencestheoretical physicsstring theorynatural sciencesphysical sciencesastronomyphysical cosmologynatural sciencesphysical sciencestheoretical physicsparticle physicshiggs bosons Parole chiave Braneworld models cosmology high energy physics Programma(i) FP6-MOBILITY - Human resources and Mobility in the specific programme for research, technological development and demonstration "Structuring the European Research Area" under the Sixth Framework Programme 2002-2006 Argomento(i) MOBILITY-2.1 - Marie Curie Intra-European Fellowships (EIF) Invito a presentare proposte FP6-2002-MOBILITY-5 Vedi altri progetti per questo bando Meccanismo di finanziamento EIF - Marie Curie actions-Intra-European Fellowships Coordinatore UNIVERSITAT DE BARCELONA Contributo UE Nessun dato Indirizzo Gran Via de les Corts Catalanes 585 BARCELONA Spagna Mostra sulla mappa Costo totale Nessun dato
