CMB constraints on the fine structure constant

Abstract

We study constraints on time variation of the fine structure constant alpha from cosmic microwave background (CMB) taking into account simultaneous change in alpha and the electron mass m_e which might be implied in unification theories. We obtain the constraints -0.097 < Delta alpha/alpha < 0.034 at 95% C.L. using WMAP data only, and -0.042 < Delta alpha/alpha < 0.026 combining with the constraint on the Hubble parameter by the HST Hubble Key Project. These are improved by 15% compared with constraints assuming only alpha varies. We discuss other relations between variations in alpha and m_e but we do not find evidence for varying alpha.

19 pages, 8 figures

References in corpus (37)

• The fundamental constants and their variation: observational status and theoretical motivations
• Wilkinson Microwave Anisotropy Probe (WMAP) First Year Observations: TE Polarization
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Angular Power Spectrum
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Parameter Estimation Methodology
• Further evidence for a variable fine-structure constant from Keck/HIRES QSO absorption spectra
• New Limits to the Drift of Fundamental Constants from Laboratory Measurements
• New BBN limits on Physics Beyond the Standard Model from He4
• 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
• A Search for Variations of Fundamental Constants using Atomic Fountain Clocks
• New limit on the present temporal variation of the fine structure constant
• Testing the stability of fundamental constants with the 199Hg+ single-ion optical clock
• The Cosmological Evolution of the Nucleon Mass and the Electroweak Coupling Constants
• Varying Alpha in a More Realistic Universe
• Implications of Gauge Unification for Time Variation of the Fine Structure Constant
• Dependence of nuclear magnetic moments on quark masses and limits on temporal variation of fundamental constants from atomic clock experiments
• Constraints on the Variations of the Fundamental Couplings
• Limits on the temporal variation of the fine structure constant, quark masses and strong interaction from quasar absorption spectra and atomic clock experiments
• Local and Global Variations of The Fine Structure Constant
• Symmetry Breaking and Time Variation of Gauge Couplings
• Constraints on changes in fundamental constants from a cosmologically distant OH absorber/emitter
• Constraining Neutrino Masses by CMB Experiments Alone
• Time-varying coupling strengths, nuclear forces and unification
• A Re-examination of the ${}^{187}$Re Bound on the Variation of Fundamental Couplings
• Measuring $\alpha$ in the Early Universe: CMB Polarization, Reionization and the Fisher Matrix Analysis
• Primordial nucleosynthesis with a varying fine structure constant: An improved estimate
• WMAP Constraints on varying $\alpha$ and the Promise of Reionization
• Nucleosynthesis and the variation of fundamental couplings
• VLT/UVES constraints on the cosmological variability of the fine-structure constant
• Probing the time-variation of the fine-structure constant: Results based on Si IV doublets from a UVES sample
• Constraining the variation of the coupling constants with big bang nucleosynthesis
• Big Bang nucleosynthesis and cosmic microwave background constraints on the time variation of the Higgs vacuum expectation value
• Gauge-Invariant Perturbations of Varying-Alpha Cosmologies
• Spatial Variation of the Fine-Structure Parameter and the Cosmic Microwave Background
• Time Variations in the Scale of Grand Unification
• Big bang nucleosynthesis with a varying fine structure constant and non-standard expansion rate
• Re/Os constraint on the time-variability of the fine-structure constant
• How strongly does dating meteorites constrain the time-dependence of the fine-structure constant?

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• The variation of fundamental constants and the role of A=5 and A=8 nuclei on primordial nucleosynthesis
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• New Constraints on variations of the fine structure constant from CMB anisotropies
• A new approach for testing variations of fundamental constants over cosmic epochs using FIR fine-structure lines
• The minimally extended Varying Speed of Light (meVSL)
• Cosmology with varying fundamental constants from hyperlight, coupled scalars
• Early Universe Constraints on Time Variation of Fundamental Constants
• Constraining Variations in the Fine Structure Constant in the presence of Early Dark Energy
• The Fine Structure Constant and the CMB Damping Scale
• 21 cm radiation - a new probe of variation in the fine structure constant
• Varying couplings in the early universe: correlated variations of $\alpha$ and $G$
• Constraining the time variation of the coupling constants from cosmic microwave background: effect of Λ_{QCD}
• 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
• Big Bang Nucleosynthesis constraints on varying electron mass solution to the Hubble tension
• Probing spatial variation of the fine-structure constant using the CMB
• Time variation of the fine structure constant in the early universe and the Bekenstein model
• Which Fundamental Constants for CMB and BAO?
• Probing variation of the fine-structure constant in runaway dilaton models using Strong Gravitational Lensing and Type Ia Supernovae
• Constraints on the electron-to-proton mass ratio variation at the epoch of reionization
• Dimensionless cosmology
• Future constraints on variations of the fine structure constant from combined CMB and weak lensing measurements
• Cosmological Constraints on Radion Evolution in the Universal Extra Dimension Model
• Spacetime variation of $\alpha$ and the CMB power spectra after the recombination
• CMB Constraint on Radion Evolution in the Brane World Scenario