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EPR-like ``funny business'' in the theory of branching space-times
branching space-times EPR
2008/4/11
EPR-like phenomena are (presumably)indeterministic, but they furthermore suggest thatour world involves seeming-strange ``funnybusiness.'' Without invoking any heavymathematics, the theory of branchi...
Does special relativity theory tell us anything new about space and time?
special relativity space-time operationalism
2008/4/11
It will be shown that, in comparison with the pre-relativistic Galileo-invariant conceptions, special relativity tells us nothing new about the geometry of spacetime. It simply calls something else "s...
This contribution gives an overview of Einstein's work on unified field theory. It characterizes this work from four perspectives, by looking at its conceptual, representational, biographical, and phi...
A major problem facing no-collapse interpretations of quantum mechanics in the tradition of Everett is how to understand the probabilistic axiom of quantum mechanics (the Born rule) in the context of ...
Continuity and logical completeness: an application of sheaf theory and topoi
topos topoi sheaf theory sheaves
2008/4/10
The notion of a continuously variable quantity can be regarded as a generalization of that of a particular (constant) quantity, and the properties of such quantities are then akin to, and derived from...
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...