Impact of inhomogeneities on slowly rolling Quintessence: implications for the local variations of the fine-structure constant
arXiv:2102.11735 · doi:10.1088/1361-6382/ac1870
Abstract
We study how the evolution of a Dark Energy Quintessence fluid is modified by the presence of a matter inhomogeneity. To do so, we study linear perturbations of a flat FLRW background containing dust and a slowly rolling scalar field. Under the assumptions of spherical symmetry and a static density contrast, \textit{i.e.} , we obtain simple analytical solutions for perturbations in the matter and dark energy-dominated epochs. As a consequence, we show that perturbations of the scalar field, if a coupling \textit{à la} Bekenstein is assumed, trigger a spatial dependence of the fine-structure "constant" which then varies as . We finally highlight that such variations can be constrained with spectroscopic observations of stars from within our galaxy, therefore offering a new probe of the nature of Dark Energy.
arXiv commentv2, with minor changes to match the published version. 2 tables and 1 figure added, with a discussion of current observations
References in corpus (39)
- Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
- Measurements of Omega and Lambda from 42 High-Redshift Supernovae
- Modified Gravity Theories on a Nutshell: Inflation, Bounce and Late-time Evolution
- Cosmology and the Fate of Dilatation Symmetry
- Everything You Always Wanted To Know About The Cosmological Constant Problem (But Were Afraid To Ask)
- Varying constants, Gravitation and Cosmology
- Further evidence for a variable fine-structure constant from Keck/HIRES QSO absorption spectra
- Indications of a spatial variation of the fine structure constant
- A Simple Varying-alpha Cosmology
- Evolution of the Fine Structure Constant Driven by Dark Matter and the Cosmological Constant
- Local and Global Variations of The Fine Structure Constant
- Stellar Populations in the Central 0.5 pc of the Galaxy I: A New Method for Constructing Luminosity Functions and Surface-Density Profiles
- Precision Gravity Tests and the Einstein Equivalence Principle
- Quintessence Cosmology and Varying
- Variation of fundamental constants: theory and observations
- A Generalized Theory of Varying Alpha
- Variations of Alpha in Space and Time
- General Dynamics of Varying-Alpha Universes
- Running vacuum in the Universe and the time variation of the fundamental constants of Nature
- A new era of fine structure constant measurements at high redshift
- Dark Energy coupling with electromagnetism as seen from future low-medium redshift probes
- Constraining Variations in the Fine Structure Constant in the presence of Early Dark Energy
- Spatial Variations of Fundamental Constants
- Cosmological evolution of Alpha driven by a general coupling with Quintessence
- The Local Effects of Cosmological Variations in Physical 'Constants' and Scalar Fields I. Spherically Symmetric Spacetimes
- The variation of the fine-structure constant from disformal couplings
- Varying Alpha
- The Local Effects of Cosmological Variations in Physical 'Constants' and Scalar Fields II. Quasi-Spherical Spacetimes
- Updated constraints on spatial variations of the fine-structure constant
- Fine-structure constant constraints on dark energy
- Constraints on a possible variation of the fine structure constant from galaxy cluster data
- Probing spatial variation of the fine-structure constant using the CMB
- Dark energy and Equivalence Principle constraints from astrophysical tests of the stability of the fine-structure constant
- Fine-structure constant constraints on Bekenstein-type models
- Varying-Alpha and K-Essence
- Supernova Cosmology and the Fine Structure Constant
- Varying fine structure "constant" and charged black holes
- Local Varying-Alpha Theories
- Loop Quantum Cosmology and the Fine Structure Constant