551 research outputs found
The universe as quantum computer
This article reviews the history of digital computation, and investigates
just how far the concept of computation can be taken. In particular, I address
the question of whether the universe itself is in fact a giant computer, and if
so, just what kind of computer it is. I will show that the universe can be
regarded as a giant quantum computer. The quantum computational model of the
universe explains a variety of observed phenomena not encompassed by the
ordinary laws of physics. In particular, the model shows that the the quantum
computational universe automatically gives rise to a mix of randomness and
order, and to both simple and complex systems.Comment: 16 pages, LaTe
Non-classical computing: feasible versus infeasible
Physics sets certain limits on what is and is not computable. These limits are very far from having been reached by current technologies. Whilst proposals for hypercomputation are almost certainly infeasible, there are a number of non classical approaches that do hold considerable promise. There are a range of possible architectures that could be implemented on silicon that are distinctly different from the von Neumann model. Beyond this, quantum simulators, which are the quantum equivalent of analogue computers, may be constructable in the near future
Universal neural field computation
Turing machines and G\"odel numbers are important pillars of the theory of
computation. Thus, any computational architecture needs to show how it could
relate to Turing machines and how stable implementations of Turing computation
are possible. In this chapter, we implement universal Turing computation in a
neural field environment. To this end, we employ the canonical symbologram
representation of a Turing machine obtained from a G\"odel encoding of its
symbolic repertoire and generalized shifts. The resulting nonlinear dynamical
automaton (NDA) is a piecewise affine-linear map acting on the unit square that
is partitioned into rectangular domains. Instead of looking at point dynamics
in phase space, we then consider functional dynamics of probability
distributions functions (p.d.f.s) over phase space. This is generally described
by a Frobenius-Perron integral transformation that can be regarded as a neural
field equation over the unit square as feature space of a dynamic field theory
(DFT). Solving the Frobenius-Perron equation yields that uniform p.d.f.s with
rectangular support are mapped onto uniform p.d.f.s with rectangular support,
again. We call the resulting representation \emph{dynamic field automaton}.Comment: 21 pages; 6 figures. arXiv admin note: text overlap with
arXiv:1204.546
On Praxiological Information
In this paper is outlined an action-oriented philosophy of information namely praxiological information The praxiological kind of knowledge and some of its species behavior communication computation information attention learning are introduced by the method of generalization and classification By exploiting the metaphor of the spectrum of colors the architectures of behavior communication and computation are shown as if they were primary colors red yellow and blue The architecture of information green is introduced by joining together the architecture of computation blue and communication yellow The principle of information that is the Data Operational Principle is stated the informational bearers that is messages are explained the informational criteria that is connectivity and compatibility are outlined The architecture of attention orange is introduced by joining together the architecture of behavior red and that of communication yellow The criterion of attention that is relevance is pointed ou
Equivalence of the Frame and Halting Problems
The open-domain Frame Problem is the problem of determining what features of an open task environment need to be updated following an action. Here we prove that the open-domain Frame Problem is equivalent to the Halting Problem and is therefore undecidable. We discuss two other open-domain problems closely related to the Frame Problem, the system identification problem and the symbol-grounding problem, and show that they are similarly undecidable. We then reformulate the Frame Problem as a quantum decision problem, and show that it is undecidable by any finite quantum computer
If physics is an information science, what is an observer?
Interpretations of quantum theory have traditionally assumed a "Galilean"
observer, a bare "point of view" implemented physically by a quantum system.
This paper investigates the consequences of replacing such an
informationally-impoverished observer with an observer that satisfies the
requirements of classical automata theory, i.e. an observer that encodes
sufficient prior information to identify the system being observed and
recognize its acceptable states. It shows that with reasonable assumptions
about the physical dynamics of information channels, the observations recorded
by such an observer will display the typical characteristics predicted by
quantum theory, without requiring any specific assumptions about the observer's
physical implementation.Comment: 30 pages, comments welcome; v2 significant revisions - results
unchange
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