Séminaire / Seminar GReCO |
| « Introduction to torsional, teleparallel and f (T) gravity, and their cosmological applications » |
|
E. Saridakis |
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Torsion has been proved to be crucial in gauging gravity, which
is in turn a necessary step towards its quantization. On the other hand, almost all the efforts in modifying gravity has been performed in the usual curvature-based framework. We investigate the case where one modifies gravity based on its torsional-teleparallel formulation, namely the f(T) gravity paradigm, and its cosmological applications. Moreover, we analyze the perturbations of the theory examining the growth history, we construct a cosmological bounce, and we use solar system observations in order to impose constraints on the f(T) forms. Additionally, we study the case where T is nonminimally coupled to a scalar field, as well as other extensions of the theory. Finally we analyze the charged black hole solutions of the theory, performing a comparison between f(R) and f(T) modifications. |
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lundi 15 septembre 2014 - 11:00 Salle des séminaires Évry Schatzman Institut d'Astrophysique de Paris |
| Pages web du séminaire / Seminar's webpage |