A. van der Merwe and F. Selleri (eds.), Bell's Theorem and the Foundations of Modern Physics, (World Scientific, Singapore-London, 1992), pp. 371-374.




IN SEARCH FOR NEW OBSERVABLES


Mladen Pavicic


Department of Mathematics, University of Zagreb, GF, Kaciceva 26, POB-217, HR-10001 Zagreb, Croatia; mpavicic@faust.irb.hr; http://m3k.grad.hr/pavicic

Abstract. A non-counterfactual proof of the Bell result for only two fixed positions of detectors is given. It is also shown that the only way to ascribe an individual quantum system a measured observable is to postulate this. A new type of observables is conjectured.

PACS numbers: 03.65.Bz

Keywords: Bell's inequalities, quantum measurements, quantum logic