Speaker
Dr
Emmanuel SARIDAKIS
(Baylor U.)
Description
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 and cosmological observations in order to impose
constraints on the f(T) forms.
Additionally, we analyze the charged black hole solutions of
the theory, performing a
comparison between f(R) and f(T) modifications. Finally, we
study the case where T is
nonminimally coupled to a scalar field, as well as other
extensions of the theory, using higher-
order torsion invariants, or torsion-matter couplings.
