Discrete quantum gravity: a mechanism for selecting the value of fundamental constants

Details Discrete quantum gravity: a mechanism for selecting the value of fundamental constants Discrete quantum gravity: a mechanism for selecting the value of fundamental constants

2003-06-20

arxiv.org/abs/gr-qc/0306095v1

Int.J.Mod.Phys. D12 (2003) 1775-1782

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, RevTex, 4 figures, honorable mention in the 2003 Gravity Research Foundation Essays, to appear in Int. J. Mod. Phys.

Scientific paper

10.1142/S0218271803004018

Smolin has put forward the proposal that the universe fine tunes the values of its physical constants through a Darwinian selection process. Every time a black hole forms, a new universe is developed inside it that has different values for its physical constants from the ones in its progenitor. The most likely universe is the one which maximizes the number of black holes. Here we present a concrete quantum gravity calculation based on a recently proposed consistent discretization of the Einstein equations that shows that fundamental physical constants change in a random fashion when tunneling through a singularity.

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