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AGPhil: Arbeitsgruppe Philosophie der Physik

AGPhil 5: Quantentheorie

AGPhil 5.3: Vortrag

Mittwoch, 11. März 2009, 17:45–18:15, M014

The Physical Selection Principle: An Ontological Hypothesis — •Ernst-Walther Stachow — Vorgebirgstraße 35, 50677 Köln

The position observable of a quantum physical system either may be assumed to be objective, but then Einstein locality does not hold, or to be non-objective in which case Einstein locality does hold. The first case gives rise to non-local hidden variable interpretations like Bohm’s, theory, whereas the second case forms the basis for widely accepted non-objectivity interpretations. These interpretations, however, have to deal with the problem of objectivation if it is assumed that objectivation occurs for instance in a measuring process.

For a possible solution to this problem, we postulate the existence of elementary selection acts deciding (and only then distinguishing) between two alternative worlds W1 and W2 with tendencies p(W1) and p(W2). Each world selected by a selection act gives rise to a subsequent selection act. These acts are unanalyzable, are not presupposed to occur in space-time and to be caused by objects, and, hence, for given worlds and p(W1), p(W2), are indistinguishable. Space and time are derivable from the universal summetry group of an elementary selection act, and objects from tensor product representations of compositions of elementary selection acts.