English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We argue that the accuracy by which the isochron parameters of the decay$^{187}{\rm Re}\to ^{187}{\rm Os}$ are determined by dating iron meteorites maynot directly constrain the possible time-dependence of the decay rate and henceof the fine-structure constant $\alpha$. From this point of view, some of theattempts to analyze the Oklo constraint and the results of the QSO absorptionlines are re-examined.Comment: 7 pages, 3 figures; v2, revised top sentence on p.

physical review letters

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi mathvariant="normal">R</mml:mi><mml:mi mathvariant="normal">e</mml:mi><mml:mo>/</mml:mo><mml:mi mathvariant="normal">O</mml:mi><mml:mi mathvariant="normal">s</mml:mi></mml:math>Constraint on the Time Variability of the Fine-Structure Constant

Re/OsConstraint on the Time Variability of the Fine-Structure Constant