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Entropy, Volume 4, Issue 1 (January 2002), Pages 1-34

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Editorial

Jump to: Research

Open AccessEditorial Entropy Enters Its Fourth Year
Entropy 2002, 4(1), 1-2; doi:10.3390/e4010001
Received: 25 January 2002 / Published: 30 January 2002
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Research

Jump to: Editorial

Open AccessArticle Algorithmic Complexity in Cosmology and Quantum Gravity
Entropy 2002, 4(1), 3-31; doi:10.3390/e4010003
Received: 13 August 2001 / Accepted: 21 December 2001 / Published: 30 January 2002
PDF Full-text (201 KB)
Abstract
In this article we use the idea of algorithmic complexity (AC) to study various cosmological scenarios, and as a means of quantizing the ravitational interaction. We look at 5D and 7D cosmological models where the Universe begins as a higher dimensional Planck size
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In this article we use the idea of algorithmic complexity (AC) to study various cosmological scenarios, and as a means of quantizing the ravitational 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 overned 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 black holes, and the path integral for quantum gravity. Some of the physical consequences of the idea presented here are:the birth of the Universe with a fluctuating metric signature; the transition from a fluctuating metric signature to Lorentzian one; "frozen" extra dimensions as a consequence of this transition; quantum handles in the spacetime foam as regions with multidimensional gravity. Full article
Open AccessCommunication Comments on "A Law of Information Growth"
Entropy 2002, 4(1), 32-34; doi:10.3390/e4010032
Received: 11 January 2001 / Accepted: 11 January 2002 / Published: 30 January 2002
Cited by 2 | PDF Full-text (12 KB) | HTML Full-text | XML Full-text
Abstract Notes added in proof of an earlier paper on an empirical "law" of information growth in evolution, and in response to questions raised therein. Full article

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