Competing bounds on the present-day time variation of fundamental constants
نویسندگان
چکیده
منابع مشابه
Comment on the Variation of Fundamental Constants
It is argued by Duff that only the time variation of dimensionless constants of nature is a legitimate subject of enquiry, and that dimensional constants such as c, h̄,G... are merely human constructs whose value has no operational meaning. We refute this claim and point out that such varying dimensional “constants” can have significant physical consequences for the universe that can be directly...
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E. Litvinova1, H. Feldmeier1, J. Dobaczewski2,3, and V. Flambaum4 1GSI Helmholtzzentrum für Schwerionenforschung, Planckstr. 1, 64291 Darmstadt, Germany; 2Institute of Theoretical Physics, University of Warsaw, Hoża 69, PL-00-681 Warsaw, Poland; 3Department of Physics, P.O. Box 35 (YFL), FI-40014 University of Jyväskylä, Finland; 4School of Physics, University of New South Wales, Sydney, NSW 20...
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We point out that for a large class of parametrized theories, there is a constant in the constrained Hamiltonian which drops out of the classical equations of motion in configuration space. Examples include the mass of a relativistic particle in free fall, the tension of the Nambu string, and Newton’s constant for the case of pure gravity uncoupled to matter or other fields. In the general case...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2009
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.79.083533