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Nature 428, 132-133 (11 March 2004) | doi:10.1038/428132a
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Astrophysics: The inconstant constant?
Lennox L. Cowie1 & Antoinette Songaila1
Abstract
Has the value of the fine-structure constant changed over the history of the Universe? An earlier analysis of radiation from distant quasars suggested the answer is yes — a new analysis says no.
The physical constants might not be so constant. If any variation in their values were measured, it could give us profound constraints on a long-sought quantized theory of gravity.
- Lennox L. Cowie and Antoinette Songaila are at the Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, Hawaii 96822, USA.
e-mail: Email: cowie@mach.ifa.hawaii.edu
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