2 papers
gr-qc2019
Correlation functions of sourced gravitational waves in inflationary scalar vector models. A symmetry based approach
Juan P. Beltrán Almeida, Josué Motoa-Manzano, César A. Valenzuela-Toledo
We use conformal symmetry to constrain the shape of inflationary correlators in the presence of long-lived vector field perturbations. Applying conformal Ward identities, we derive…
astro-ph.CO2018
Arbitrarily coupled forms in cosmological backgrounds
Juan P. Beltrán Almeida, Alejandro Guarnizo, César A. Valenzuela-Toledo
In this paper we consider a model based on interacting forms and explore some cosmological applications. Restricting to gauge invariant actions, we build a general Lagrangian a…