Constraints on the Variations of the Fundamental Couplings

Abstract

We reconsider several current bounds on the variation of the fine-structure constant in models where all gauge and Yukawa couplings vary in an interdependent manner, as would be expected in unified theories. In particular, we re-examine the bounds established by the Oklo reactor from the resonant neutron capture cross-section of 149Sm. By imposing variations in Λ_{QCD} and the quark masses, as dictated by unified theories, the corresponding bound on the variation of the fine-structure constant can be improved by about 2 orders of magnitude in such theories. In addition, we consider possible bounds on variations due to their effect on long lived α- and β-decay isotopes, particularly 147Sm and 187Re. We obtain a strong constraint on Δα/ α, comparable to that of Oklo but extending to a higher redshift corresponding to the age of the solar system, from the radioactive life-time of 187Re derived from meteoritic studies. We also analyze the astrophysical consequences of perturbing the decay Q values on bound state β-decays operating in the s-process.

25 pages, latex, 5 eps figures

References in corpus (14)

• Further Evidence for Cosmological Evolution of the Fine Structure Constant
• Violations of the equivalence principle in a dilaton-runaway scenario
• Runaway dilaton and equivalence principle violations
• A Simple Varying-alpha Cosmology
• The Cosmological Evolution of the Nucleon Mass and the Electroweak Coupling Constants
• Implications of Gauge Unification for Time Variation of the Fine Structure Constant
• Evolution of the Fine Structure Constant Driven by Dark Matter and the Cosmological Constant
• The Behaviour of Varying-Alpha Cosmologies
• Symmetry Breaking and Time Variation of Gauge Couplings
• Time-varying coupling strengths, nuclear forces and unification
• Limits on Cosmological Variation of Strong Interaction and Quark Masses from Big Bang Nucleosynthesis, Cosmic, Laboratory and Oklo Data
• Time-Varying alpha and Particle Physics
• Do the Fundamental Constants Vary in the Course of the Cosmological Evolution?
• Constraining the variation of the coupling constants with big bang nucleosynthesis

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• The fundamental constants and their variation: observational status and theoretical motivations
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• Violations of the equivalence principle in a dilaton-runaway scenario
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• A Re-examination of the ${}^{187}$Re Bound on the Variation of Fundamental Couplings
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• Enhancement of variation of fundamental constants in ultracold atom and molecule systems near Feshbach resonances
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• Planck intermediate results. XXIV. Constraints on variation of fundamental constants
• Gauge-Invariant Perturbations of Varying-Alpha Cosmologies
• Manifestations of a spatial variation of fundamental constants on atomic clocks, Oklo, meteorites, and cosmological phenomena
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• Constraining the variation of fundamental constants at z ~ 1.3 using 21-cm absorbers
• Non-universal scalar-tensor theories and big bang nucleosynthesis
• Primordial Nucleosynthesis with varying fundamental constants: A semi-analytical approach
• The Wall of Fundamental Constants
• Time Variations in the Scale of Grand Unification
• Re/Os constraint on the time-variability of the fine-structure constant
• Limits on cosmological variation of quark masses and strong interaction
• CMB constraints on the fine structure constant
• Yoga Dark Energy: Natural Relaxation and Other Dark Implications of a Supersymmetric Gravity Sector
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• Cosmological evolution of Alpha driven by a general coupling with Quintessence
• String theory, cosmology and varying constants
• The Fine-structure Constant as a Probe of Chemical Evolution and AGB Nucleosynthesis in Damped Lyman-alpha Systems
• Optimal constraint on g_NL from CMB
• Constraining the time variation of the coupling constants from cosmic microwave background: effect of Λ_{QCD}
• Gyromagnetic Factors and Atomic Clock Constraints on the Variation of Fundamental Constants
• Variation of fundamental constants in space and time: theory and observations
• Axion Homeopathy: Screening Dilaton Interactions
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• Molecular absorptions in high-z objects
• Unifying cosmological and recent time variations of fundamental couplings
• Helium and Deuterium Abundances as a Test for the Time Variation of the Fine Structure Constant and the Higgs Vacuum Expectation Value
• $\theta$-dependence of light nuclei and nucleosynthesis
• Bound on the time variation of the fine structure constant driven by quintessence
• A Time Variation of Proton-Electron Mass Ratio and Grand Unification
• Cosmological Evolution of Fundamental Constants: From Theory to Experiment
• On the cosmological evolution of alpha and mu and the dynamics of dark energy
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• Possible variations of the fine structure constant $\alpha$ and their metrological significance
• Time Evolution of the Fine Structure Constant in a Two-Field Quintessence Model
• Cosmological Variation of the Fine Structure Constant from an Ultra-Light Scalar Field: The Effects of Mass
• Enhanced Sensitivity to the Time Variation of the Fine-Structure Constant and $m_p/m_e$ in Diatomic Molecules: A Closer Examination of Silicon Monobromide
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• Cosmic Variation of Proton to Electron Mass Ratio with an interacting Higgs Scalar Field
• Variation of the fine structure constant in the light of recent helium abundance measurement
• Investigation of the fundamental constants stability based on the reactor Oklo burn-up analysis
• Variations of nuclear binding with quark masses
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• Can homogeneous extra dimensions be stabilized during matter domination?
• The Fine Structure Constant and Habitable Planets
• Varying Constants, Black Holes, and Quantum Gravity
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• Constraints on Field Theoretical Models for Variation of the Fine Structure Constant
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• How strongly does dating meteorites constrain the time-dependence of the fine-structure constant?
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• Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the string-theoretical Swampland Programme
• Estimations of the cosmological parameters from the observational variation of the fine structure constant
• Temporal variation of coupling constants and nucleosynthesis
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• Time variation of the fine structure constant in decrumpling or TVSD model
• Cosmological Consequences of Topological Defects: Dark Energy and Varying Fundamental Constants
• Gauge invariance and non-constant gauge couplings