The number of dimensional fundamental constants

Details The number of dimensional fundamental constants The number of dimensional fundamental constants

2007-11-27

arxiv.org/abs/0711.4276v2

Physics

Classical Physics

7 pages, 2 figures, v2: Only changes in authors affiliations

Scientific paper

We revisit, qualify, and objectively resolve the seemingly controversial question about what is the number of dimensional fundamental constants in Nature. For this purpose, we only assume that all we can directly measure are space and time intervals, and that this is enough to evaluate any physical observable. We conclude that the number of dimensional fundamental constants is two. We emphasize that this is an objective result rather than a "philosophical opinion", and we let it clear how it could be refuted in order to prove us wrong. Our conclusion coincides with Veneziano's string-theoretical one but our arguments are not based on any particular theory. As a result, this implies that one of the three usually considered fundamental constants "G", "c" or "h" can be eliminated and we show explicitly how this can be accomplished.

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