Bound on the time variation of the fine structure constant driven by quintessence

Abstract

The bound on the time variation of the fine structure constant ($\alpha$) driven by the dynamics of quintessence scalar field which is coupled to electromagnetism is discussed using phenomenological quintessential models constrained by SNIa and CMB observations. We find that those models allowing early quintessence give the largest variation $\Delta \alpha$ at the decoupling epoch. Furthermore, the fifth force experiments imply that $\Delta \alpha /\alpha$ is less than about 0.1%.

4 pages (use RevTex4), 3 figures

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• Non-universal scalar-tensor theories and big bang nucleosynthesis
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• Constraining Variations in the Fine Structure Constant in the presence of Early Dark Energy
• Variable Chaplygin Gas: Constraints from CMBR and SNe Ia
• Understanding the origin of CMB constraints on Dark Energy
• On the cosmological evolution of alpha and mu and the dynamics of dark energy
• Where are the Walls?
• Time Variation of Fine Structure Constant and Proton-Electron Mass Ratio with Quintessence
• Cosmological solutions of time varying speed of light theories
• The variation of the electromagnetic coupling and quintessence
• JWST observations constrain the time evolution of fine structure constants and dark energy - electromagnetic coupling
• Cosmological Behavior of a Parity and Charge-Parity Violating Varying Alpha Theory
• Constraining PCP Violating Varying Alpha Theory Through Laboratory Experiments
• Spacetime variation of $\alpha$ and the CMB power spectra after the recombination
• Analysing the Effect on CMB in a Parity and Charge Parity Violating Varying Alpha Theory