Quintessence and variation of the fine structure constant in the CMBR

Abstract

We study dependence of the CMB temperature anisotropy spectrum on the value of the fine structure constant $\alpha$ and the equation of state of the dark energy component of the total density of the universe. We find that bounds imposed on the variation of $\alpha$ from the analysis of currently available CMB data sets can be significantly relaxed if one also allows for a change in the equation of state.

5 pages, 3 figures. Several references added and a few minor typos corrected in the revised version

References in corpus (7)

• Further Evidence for Cosmological Evolution of the Fine Structure Constant
• A Simple Varying-alpha Cosmology
• Early-universe constraints on a Primordial Scaling Field
• Current constraints on the dark energy equation of state
• Further constraints on variation of the fine structure constant from alkali doublet QSO absorption lines
• Improved constraints on possible variation of physical constants from H I 21cm and molecular QSO absorption lines
• A scalar-tensor cosmological model with dynamical light velocity

Cited by in corpus (7)

• The fundamental constants and their variation: observational status and theoretical motivations
• Time Variation of the Fine Structure Constant Driven by Quintessence
• Probing Quintessence with Time Variation of Couplings
• Measuring $\alpha$ in the Early Universe: CMB Temperature, Large-Scale Structure and Fisher Matrix Analysis
• Can we test Dark Energy with Running Fundamental Constants ?
• Varying Fine Structure Constant and Black Hole Physics
• Spacetime variation of $\alpha$ and the CMB power spectra after the recombination