Dynamically broken Anti-de Sitter action for gravity

TL;DR

This paper introduces a novel gravitational action derived from a spontaneously broken Anti-de Sitter gauge theory, incorporating Einstein-Cartan gravity with additional quadratic curvature and torsion terms, along with a scalar Higgs sector.

Contribution

It presents a new formulation of gravity with a Higgs mechanism that results in a modified action including quadratic curvature and torsion terms.

Findings

Derivation of a Lorentz invariant gravitational action from broken Anti-de Sitter gauge theory

Inclusion of quadratic curvature and torsion terms in the gravitational action

Integration of a scalar Higgs sector into the gravitational framework

Abstract

Due to a suitable Higgs mechanism, a standard Anti-de Sitter gauge theory becomes spontaneously broken. The resulting Lorentz invariant gravitational action includes the Hilbert-Einstein term of ordinary Einstein-Cartan gravity with cosmological constant, plus contributions quadratic in curvature and torsion, and a scalar Higgs sector.