Constraining the time variation of the coupling constants from cosmic microwave background: effect of Λ_{QCD}

Abstract

We investigate constraints on the time variation of the fine structure constant between the recombination epoch and the present epoch, Δα/α\equiv (α_{rec} - α_{now})/α_{now}, from cosmic microwave background (CMB) taking into account simultaneous variation of other physical constants, namely the electron mass m_{e} and the proton mass m_{p}. In other words, we consider the variation of Yukawa coupling and the QCD scale Λ_{QCD} in addition to the electromagnetic coupling. We clarify which parameters can be determined from CMB temperature anisotropy in terms of singular value decomposition. Assuming a relation among variations of coupling constants governed by a single scalar field (the dilaton), the 95% confidence level (C.L.) constraint on Δα/αis found to be -8.28 \times 10^{-3} < Δα/α< 1.81 \times 10^{-3}, which is tighter than the one obtained by considering only the change of αand m_{e}. We also obtain the constraint on the time variation of the proton-to-electron mass ratio μ\equiv m_{p}/m_{e} to be -0.52 < Δμ/μ< 0.17 (95% C.L.) under the same assumption. Finally, we also implement a forecast for constraints from the PLANCK survey.

25 pages, 4 figures; references added

References in corpus (21)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Likelihoods and Parameters from the WMAP data
• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Angular Power Spectra
• New Limits on Coupling of Fundamental Constants to Gravity Using ${}^{87}$Sr Optical Lattice Clocks
• Probing cosmological parameters with the CMB: Forecasts from full Monte Carlo simulations
• Strong Limit on a Variable Proton-to-Electron Mass Ratio from Molecules in the Distant Universe
• Enhanced sensitivity to time-variation of m_p/m_e in the inversion spectrum of ammonia
• Revision of VLT/UVES constraints on a varying fine-structure constant
• Comment on "Limits on the Time Variation of the Electromagnetic Fine-Structure Constant in the Low Energy Limit from Absorption Lines in the Spectra of Distant Quasars"
• Bounds on the fine structure constant variability from FeII absorption lines in QSO spectra
• Reconstructing the dark energy equation of state with varying couplings
• New Constraints on variations of the fine structure constant from CMB anisotropies
• Early Universe Constraints on Time Variation of Fundamental Constants
• CMB constraints on the fine structure constant
• Time variation of proton-electron mass ratio and fine structure constant with runaway dilaton
• Unifying cosmological and recent time variations of fundamental couplings
• Constraints on time variation of fine structure constant from WMAP-3yr data
• WMAP 5-year constraints on time variation of $\alpha$ and $m_e$ in a detailed recombination scenario
• On the cosmological evolution of alpha and mu and the dynamics of dark energy
• Possible time-variability of the fine-structure constant expected from the accelerating universe
• Impact of the matter density uncertainty on the dark energy reconstruction

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• Primordial nucleosynthesis with varying fundamental constants: Improved constraints and a possible solution to the Lithium problem
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• Cosmology with varying fundamental constants from hyperlight, coupled scalars
• Varying couplings in the early universe: correlated variations of $\alpha$ and $G$
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• Gyromagnetic Factors and Atomic Clock Constraints on the Variation of Fundamental Constants
• Primordial nucleosynthesis with varying fundamental constants: Solutions to the Lithium problem and the Deuterium discrepancy
• Constraints on variation in $\alpha$ and $m_e$ from WMAP 7-year data
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• Consistency of local and astrophysical tests of the stability of fundamental constants
• Primordial nucleosynthesis with varying fundamental constants: Degeneracies with cosmological parameters
• Constraints of the variation of fundamental couplings and sensitivity of the equation of state of dense matter
• Constraining fundamental parameters in modified gravity using Gaia-DR2 massive white dwarf observation
• Constraining Fundamental Constants with Fast Radio Bursts: Unveiling the Role of Energy Scale
• On the Stability of Fundamental Couplings in the Galaxy
• Constraining PCP Violating Varying Alpha Theory Through Laboratory Experiments
• Effect of temperature on measurement of fundamental constants using white dwarfs in Gaia-EDR3 survey
• Refining fundamental constants with white dwarfs: machine learning informed constraints on fine-structure constant and proton-to-electron mass ratio
• Varying fundamental constants cosmography
• Analysing the Effect on CMB in a Parity and Charge Parity Violating Varying Alpha Theory