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Cosmological evolution and couplings of four relevant Dark Energy models

Pauline E. Vielzeuf

The standard model of cosmology, so-called ΛCDM remains so far the simplest viable model to describe our universe at large scales. Although it agrees quite well with recent observations, the source of the late cosmic expansion, the Dark energy, parametrized in this model as a cosmological constant $Lambda$ remains unexplained. Hence, alternative parametrizations of this Dark component appeared, and the goal of future surveys will then be to distinguish one model from another. In this talk I will introduce a set of relevent models that have been proposed in the litterature and present observationnal properties that one can forecast in order to verify later on whether or not one will manage to constrain this models with future surveys such as the E-ELT or Euclid. Specific attention will be given to possible variations of the fine-struture constant in these models.

2013 May 31, 13:30

Centro de Astrofísica da Universidade do Porto (Classroom)
Rua das Estrelas, 4150-762 Porto

Faculdade de Ciências da Universidade de Lisboa Universidade do Porto Faculdade de Ciências e Tecnologia da Universidade de Coimbra
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia