2018/06/30 by J. R. L. Santos, P. H. R. S. Moraes
Physics and Astronomy · #Cosmology #Cosmology and Gravitation Theories #Dark energy #False vacuum #Formalism (music) #Noncommutative and Quantum Gravity Theories #Planck #QED vacuum #Quantum Electrodynamics and Casimir Effect #Scalar field #Vacuum energy #Vacuum state #gr-qc #hep-th
paper · pdf · doi:10.1142/s0219887820500164
17 pages, 4 figures
openalex publication_date 2019/11/28 · openalex created_date 2019/12/05 · arxiv created 2019/12/23 · arxiv updated 2019/12/24 · openalex updated_date 2026/08/05
The possibility that the vacuum energy density [Formula: see text] is, indeed, varying in time, has been investigated lately from the running vacuum models perspective. Motivated by such models, in this work, we relate the decaying vacuum energy [Formula: see text] with a scalar field [Formula: see text]. We derive the equations of motion from such a premise and implement the first-order formalism in order to obtain analytical solutions to the cosmological parameters. We show that these are in agreement with recent Planck observational data. We discuss the physical consequences of having [Formula: see text] related to [Formula: see text].