You could be interested by a paper introducing String theory as a 
syntactical logical structure by the "other Schmidhuber" (Juergen's 
brother Christof):


Here:

http://arxiv.org/abs/hep-th/0011065

  What are strings made of? The possibility is discussed that strings 
are purely mathematical objects, made of logical axioms. More 
precisely, proofs in simple logical calculi are represented by graphs 
that can be interpreted as the Feynman diagrams of certain large-N 
field theories. Each vertex represents an axiom. Strings arise, because 
these large-N theories are dual to string theories. These ``logical 
quantum field theories'' map theorems into the space of functions of 
two parameters: N and the coupling constant. Undecidable theorems might 
be related to nonperturbative field theory effects.



This is infinitely better than Wolfram pure classical CA approach which 
has no rules for distinguishing 1 and 3 person notion, and so miss the 
idea of internal emerging physical laws.




Le 14-mars-07, à 10:23, Mohsen Ravanbakhsh a écrit :

> I'm thinking there's some kind of similarity between string theory and 
> depicting the world as a big CA. In String theory we have some 
> vibrating strings which have some kind of influence on each other and 
> can for different matters and fields. CA can play such role of 
> changing patterns and of course the influence is evident. Different 
> rules in CA might correspond to various basic shapes of vibration in 
> strings...
> I don't know much about S.T. but the idea of such mapping seems very 
> interesting.
>
> -- 
> Mohsen Ravanbakhsh.
>
>
>  >
>
http://iridia.ulb.ac.be/~marchal/

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