Time ago there was an interesting article on the arxiv title "Trialogue", about h, c, and G as fundamental(adsbygoogle = window.adsbygoogle || []).push({}); dimensionfulconstants. A doubt can be raised additionaly: which is the more interesting mathematical object, [tex]G_N[/tex] or [/tex]L_p[/tex].

If Planck's length is the fundamental object, one can recover Gauge QFT in a single limit L-->0, but a double limit is needed to recover Newton's constant: h-->0, L--->0. And the single limit h-->0 is rather strange, because if Planck's length (and c) remains finite then G goes to infinite.

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# Newton's G or Planck's Length?

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