# Théorie

# Fundamental Physics and Nuclear Structure

Much of the fundamental physics we have learned about in recent years was uncovered in low-energy experiments. More low-energy experiments are in progress and many require that nuclear effects be untangled from the fundamental physics we are trying to probe. I review the issue and attempts to understand the relevant nuclear physics in three kinds of experimental searches: for neutrinoless double beta decay, for new sources of CP violation through nonzero atomic electric dipole moments, and for dark matter particles through scattering from ordinary matter.

# Charged Chern-Simons AdS black holes

We found the most general spherically symmetric, static black hole solution for Chern-Simons gravity based on a simple extension of the AdS algebra, that is, AdS x U(1). The corresponding gauge connection contains gravitational fields describing a Riemann-Cartan manifold with electromagnetic matter field. When the electromagnetic field and some components of the torsion are switched off, solution reproduces the known ones found in the literature. For other choices of the torsion components, our solution is physically different from the already known ones.

# Cubic interactions and Symmetries of Higher-spin field theories

# Localized features in the primordial spectra from heavy physics

Primordial density fluctuations provide one of a few ways to probe the high energy physics behind inflation. In this talk, we discuss the possibility that we could obtain some hints of the heavy physics during inflation by analyzing local features in the spectra of the primordial fluctuations.

# Shape Dynamics: a new tool for General Relativity, Cosmology and Quantum Gravity

# On renormalized AdS action and Critical Gravity

It can be shown that the renormalized action for AdS gravity in even spacetime dimensions is equivalent --on shell-- to a polynomial of the Weyl tensor, whose first non-vanishing term is Weyl^2. Remarkably enough, the coupling of this last term coincides with the one that appears in Critical Gravity