Algorithmic Complexity in Cosmology and Quantum Gravity

Details Algorithmic Complexity in Cosmology and Quantum Gravity Algorithmic Complexity in Cosmology and Quantum Gravity

2001-08-13

arxiv.org/abs/gr-qc/0108038v1

Entropy 4 (2002) 3-31

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages

Scientific paper

In this article we use the idea of algorithmic complexity (AC) to study various cosmological scenarios, and as a means of quantizing the gravitational interaction. We look at 5D and 7D cosmological models where the Universe begins as a higher dimensional Planck size spacetime which fluctuates between Euclidean and Lorentzian signatures. These fluctuations are governed by the AC of the two different signatures. At some point a transition to a 4D Lorentzian signature Universe occurs, with the extra dimensions becoming ``frozen'' or non-dynamical. We also apply the idea of algorithmic complexity to study composite wormholes, the entropy of blackholes, and the path integral for quantum gravity.

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