New post-Newtonian parameter to test Chern-Simons gravity.

Parametrized post-Newtonian expansion of Chern-Simons gravity

The gravity of the situation

In this thesis we examine several ways in which we can explore the early universe through gravitationalwaves and the fundamental nature of gravity through cosmology and observations of dynamics within the solar system. Both of these topics have taken center stage, as we are living at a unique time which promises to bring fundamental insights into the nature of gravity with the discovery of new ...

Effects of Chern-Simons gravity on bodies orbiting the Earth

One of the possible low-energy consequences of string theory is the addition of a Chern-Simons term to the standard Einstein-Hilbert action of general relativity. It can be argued that the quintessence field should couple to this Chern-Simons term, and if so, it drives in the linearized theory a parity-violating interaction between the gravito-electric and gravitomagnetic fields. In this paper,...

Generalised Chern-Simons actions for 3d gravity and κ-Poincaré symmetry

We consider Chern-Simons theories for the Poincaré, de Sitter and anti-de Sitter groups in three dimensions which generalise the Chern-Simons formulation of 3d gravity. We determine conditions under which κ-Poincaré symmetry and its de Sitter and anti-de Sitter analogues can be associated to these theories as quantised symmetries. Assuming the usual form of those symmetries, with a timelike vec...

Hamiltonian dynamics and Faddeev-Jackiw quantization of 3D gravity with a Barbero-Immirzi like parameter

It is well-know that 3-dimensional gravity is an interesting toy model. In fact, it is considered as good test theory for trying to understand the difficulties that emerge in the quantization of four dimensional gravity. It is worth to mention, that since the works developed by Achucarro, Towsend, Witten and other authors [1, 2], there is a huge effort for understanding at classical and quantum...