Evolving Fundamental Constants and Metrology

Details Evolving Fundamental Constants and Metrology Evolving Fundamental Constants and Metrology

2005-09-23

arxiv.org/abs/hep-ph/0509255v1

Proceedings of the 16th National Congress of the Australian Institute of Physics (Canberra, 31 January - 4 February 2005), p.1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, RevTeX4, presented at the 16th National Congress of the Australian Institute of Physics (Canberra, 31 January - 4 Feb

Scientific paper

Astrophysical observations suggest that the fine structure constant (alpha) may (or may not) be evolving over the cosmological time scale. This raises a much debated question: is alpha variation due to the variation of the speed of light (c), elementary electric charge (e), or the Planck constant (h)? Previously, we proposed the metrological approach based on the analysis of the relationships between the fundamental units (e.g. of the length and time) and the fundamental constants. Our methodology allows one to find how each of the fundamental constants e, c, h evolves in time and offers a new outlook for this area. Here we give a brief outline of this approach and the main results it produces.

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