2016/12/28 by Ippocratis D. Saltas, Vincenzo Vitagliano · 22 citations
Physics and Astronomy · #Action (physics) #Black Holes and Theoretical Physics #Context (archaeology) #Cosmology and Gravitation Theories #Covariant transformation #Effective action #Gauge theory #Gravitation #Invariant (physics) #Mathematical physics #Physics #Quantum #Quantum field theory #Quantum gravity #Quantum mechanics #Solar and Space Plasma Dynamics #Theoretical physics #astro-ph.CO #gr-qc #hep-th
paper · pdf · doi:10.1088/1475-7516/2017/05/020
published in Journal of Cosmology and Astroparticle Physics 2017(05), 020 (Institute of Physics) · 18 pages plus references, 1 figure
arxiv created 2016/12/28 · openalex publication_date 2017/05/08 · arxiv updated 2017/05/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We present for the first time an explicit exposition of quantum corrections within the cubic Galileon theory including the effect of quantum gravity, in a background- and gauge-invariant manner, employing the field-reparametrisation approach of the covariant effective action at 1-loop. We show that the consideration of gravitational effects in combination with the non-linear derivative structure of the theory reveals new interactions at the perturbative level, which manifest themselves as higher-operators in the associated effective action, which' relevance is controlled by appropriate ratios of the cosmological vacuum and the Galileon mass scale. The significance and concept of the covariant approach in this context is discussed, while all calculations are explicitly presented.