New Constraints on Varying Alpha

Details New Constraints on Varying Alpha New Constraints on Varying Alpha

2004-05-31

arxiv.org/abs/astro-ph/0405630v1

Astronomy and Astrophysics

Astrophysics

8 pages, review talk at the XXXIX Rencontres de Moriond (La Thuile, March 2004), to appear in the proceedings

Scientific paper

I briefly present some current theoretical motivations for time or space variations of the fundamental constants of nature and review current key observational results. I focus on the fine-structure constant, and particularly on measurements using quasars and the cosmic microwave background. I also compare various observational results to the simplest model-building expectations.

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