2014/05/28 by M. P. Pierpointand, M. P. Pierpoint, Pierpoint, M. P. +2
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #gr-qc
paper · pdf · doi:10.48550/arxiv.1405.7419
18 pages, 11 figures
arxiv created 2014/05/28 · openalex publication_date 2014/05/28 · arxiv updated 2014/05/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
In this paper, dark energy is modelled via a spherically symmetric quintessence scalar field φ, the dynamics of which are found to be analogous to a pendulum. This is due to a driving axion potential V(|φ|), whose origins reside within the study of quantum chromodynamics (QCD). The effect of a cosmological constant Λ, introduced to represent the vacuum energy of space, is also investigated. Preliminary results suggest that Λ is analogous to a spring-constant, and thus determining the elasticity of space. Additionally, a cosmological scale-factor a(t,r), notably with an added spatial dependence, is also considered. We propose that due to this inhomogeneous scale-factor, the energy-density is characteristic of temperature fluctuations observed within the cosmic microwave background. Such fluctuations could ultimately lead to a universe composed of filaments and voids; vast expanses of space, separated by regions of localised matter/energy-density. Finally, we provide a means of screening both the cosmological constant and curvature of the universe, to effective values that are more consistent with experimental observation.