3 papers
hep-th2018
Scalar probes on wormholes in Lovelock theories with unique vacuum
Octavio Fierro, Daniela Narbona, Julio Oliva +2
In this paper we present a new family of wormhole geometries in Lovelock theories with a unique vacuum, and study their stability under scalar field perturbations. As the solutions…
gr-qc2017
Non-minimally coupled scalar field cosmology with torsion
Antonella Cid, Fernando Izaurieta, Genly Leon +2
In this work we present a generalized Brans-Dicke lagrangian including a non-minimally coupled Gauss-Bonnet term without imposing the vanishing torsion condition. In the resulting…
gr-qc2017
Nonminimal couplings, gravitational waves, and torsion in Horndeski's theory
José Barrientos, Fabrizio Cordonier-Tello, Fernando Izaurieta +4
The Horndeski Lagrangian brings together all possible interactions between gravity and a scalar field that yield second-order field equations in four-dimensional spacetime. As orig…