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A computer simulation runs a model generating a phenomenon under investigation. For the simulation to be explanatory, the model has to be explanatory. The model must be isomorphic to the natural syste...
Complex Systems from the Perspective of Category Theory: I. Functioning of the Adjunction Concept
Complex Systems Information Structures Localization Systems
2008/4/10
We develop a category theoretical framework for the comprehension of the information structure associated with a complex system, in terms of families of partial or local information carriers. The fram...
Comment on "On the logical consistency of special relativity theory and non-Euclidean geometries: Platonism versus formalism"
special theory of relativity undecidable propositions
2008/4/10
As observed in the PhilSci preprint ID Code 1255 [1], consistency in the author's proposed non-Aristotelian finitary logic (NAFL) demands that Euclid's fifth postulate must necessarily be provable fro...
Classical Relativity Theory
relativity theory spacetime structure Newtonian gravitation theory
2008/4/10
This survey article is divided into two parts. In the first (section 2), I give a brief account of the structure of classical relativity theory. In the second (section 3), I discuss three special topi...
Characterizing quantum theory in terms of information-theoretic constraints
quantum information entanglement nonlocality
2008/4/10
We show that three fundamental information-theoretic constraints -- the impossibility of superluminal information transfer between two physical systems by performing measurements on one of them, the i...
Bohr's Theory of the Atom: Content, Closure and Consistency
Old quantum theory Bohr Consistent
2008/4/10
How exactly does the much-discussed inconsistency in Bohr’s theory of the atom manifest itself? A close look at the suggestions made so far in the literature suggests that the theory may not be incons...
After a brief review of ontic and epistemic descriptions, and of subjective, logical and statistical interpretations of probability, we summarize the traditional axiomatization of calculus of probabil...
Barrier Theory
Finitism in Physics Relativity
2008/4/10
Relativity and Quantum Theory both set finite limits on certain physical quantities. For relativity it is the speed of light. For Quantum Theory it is the discrete quantity of energy which translates ...
Are Rindler Quanta Real? Inequivalent Particle Concepts in Quantum Field Theory
quanta Minkowski Rindler Weyl Algebra
2008/4/10
Philosophical reflection on quantum field theory has tended to focus on how it revises our conception of
what a particle is. However, there has been relatively little discussion of the threat to the ...
Anthropic reasoning in multiverse cosmology and string theory
string theory multiverse cosmology Anthropic reasoning
2008/4/10
Anthropic arguments in multiverse cosmology and string theory rely on the weak anthropic principle (WAP). We show that the principle, though ultimately a tautology, is nevertheless ambiguous. It can b...
An Application of Information Theory to the Problem of the Scientific Experiment
Information theory ergodic theory induction
2008/4/10
There are two basic approaches to the problem of induction: the empirical one, which deems that the possibility of induction depends on how the world was made (and how it works) and the logical one, w...
An alternative to Kitcher's theory of conceptual progress and his account of the change of the gene concept
concepts conceptual change gene concept
2008/4/10
The present paper discusses Kitcher’s framework for studying conceptual change and progress. Kitcher’s core notion of reference potential is hard to apply to concrete cases. In addition, an account of...
Field theories have been central to physics over the last 150 years, and there are several theories in contemporary physics in which physical fields play key causal and explanatory roles. This paper p...
On the basis of examples from mathematical physics, theoretical hypotheses are distinguished from generative theories. An example of the former is Green’s claim that light is the vibrations of a certa...
A Theory of the Universe from Contemporary Physics: Evaluating Smolin's Argument for the Elimination of 'Ideal Elements'
quantum cosmology Barbour-Bertotti theory
2008/4/9
I explore Leibnizian themes in the theoretical physicist's pursuit of a quantum cosmology by examining Smolin's program based on the elimination of ideal elements. These constructs are formal mathemat...