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arxiv: astro-ph/0207390 · v1 · submitted 2002-07-18 · 🌌 astro-ph · hep-ph· nucl-th

alpha :a constant that is not a constant?

classification 🌌 astro-ph hep-phnucl-th
keywords alphaconstantfindobservationalstructureancientconstancydata
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We review the observational information on the constancy of the fine structure constant alpha. We find that small improvements on the measurement of ^{187}Re lifetime can provide significant progress in exploring the range of variability suggested by QSO data. We also discuss the effects of a time varying alpha on stellar structure and evolution. We find that radioactive dating of ancient stars can offer a new observational window.

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