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Early Universe Constraints on Time Variation of Fundamental Constants

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arxiv 0809.2033 v1 pith:JUONRPGX submitted 2008-09-11 astro-ph

Susana J. Landau , Mercedes E. Mosquera , Claudia G. Scoccola , Hector Vucetich This is my paper · ORCID
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keywords variationtimealphaconstantsconstraintsearlyelectronfundamental
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abstract

We study the time variation of fundamental constants in the early Universe. Using data from primordial light nuclei abundances, CMB and the 2dFGRS power spectrum, we put constraints on the time variation of the fine structure constant $\alpha$, and the Higgs vacuum expectation value $<v>$ without assuming any theoretical framework. A variation in $<v>$ leads to a variation in the electron mass, among other effects. Along the same line, we study the variation of $\alpha$ and the electron mass $m_e$. In a purely phenomenological fashion, we derive a relationship between both variations.

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Cited by 2 Pith papers

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  1. Searching for coupled, hyperlight scalars across cosmic history

    hep-ph 2025-02 conditional novelty 6.0 of 10

    Hyperlight quadratically coupled scalars making up a few percent of dark matter are bounded to near- or sub-gravitational couplings to electrons and photons over 10^-31 to 10^-28 eV, with quasar spectra setting the st...

  2. Towards degeneracy breaking of early universe models

    gr-qc 2019-08 conditional novelty 5.0 of 10

    Conformally related early universe models can be told apart by the location of frame-invariant variables built from the time variation of particle and Planck masses.

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