Dark energy models

The universe is undergoing a period of accelerated expansion. I work on dark energy models which attempt to explain this acceleration. I am interested in Scalar-Fluid models: these are quintessence models where an interaction between dark matter and dark energy is added at the level of the Lagrangian.

Teleparallel gravity

Teleparallel gravity is an alternative formulation of general relativity (GR) based on the torsion tensor of the Weitzenbock connection, as opposed to the curvature of the Levi-Civita connection of GR. I am interested in models in which an additional boundary term is inserted into the action, which are able to incorporate f(R) gravity and f(T) gravity into one framework.

Star solutions in general relativity

I am interested in properties of fluid solutions in general relativity. I have looked at slowly rotating perfect fluids and considered their matching to background which is either asymptotically de Sitter or anti-de Sitter. I've also looked at mass-radius ratio bounds in higher dimensional gravity. I have considered both higher dimensional general relativity and five dimensional Gauss-Bonnet gravity.