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ALL THEMES
THEME - I CHARPAK et al. OMNES, R HEISENBERG,W HAWKING, S SCHÜTTE, D GUICHON, P JANSEN, FK - a JANSEN, FK -b KRÖGER, H BRICMONT, J SCHULMAN,LS BITBOL.M MAILS uncertainty causality |
IS THE UNIVERSE BASED ON HAZARDS ? CONTRIBUTION GUICHON, Pierre , Research Director in Physics CEA, France Professional literature: http://xxx.uni-augsburg.de/find/hep-lat/ http://www.slac.stanford.edu/spires >browse>select author>enter name>browse>select name on button>view checked papers) OPINION DISAGREEMENT TEXTE received in 2005 In fact I perfectly agree with what Dieter Schütte says. (see statement of SCHÜTTE) Quantum mechanics, as I use it and understand it, is causal and deterministic. It is only in the measurement process that probabilities come into play. For instance, if one knows the state vector at some time, then it is completely determined at any other time by the quantum time evolution. However with the state vector one can only predict the probability (which can be 100%) of the outcome of some measurement. Note that causality has direct consequences (that is independently of the details of the dynamics) on the analytic structure of the amplitudes, which results in the existence of dispersion relations, which can thus be considered as a test of causality. As far as I know, I never heard of a violation of these relations, be it in subnuclear physics or in macroscopic physics (dielectrics). Pierre GUICHON |