Probability in GRW theory |
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| Institution: | 1. Department of Philosophy, Logic, and Scientific Method, London School of Economics, UK;2. ICREA and Department of Philosophy, Universitat Autònoma de Barcelona, Spain;1. Department of Philosophy, Logic and Scientific Method, London School of Economics and Political Science, Houghton Street, London WC2A 2AE, UK;2. Tilburg Center for Logic and Philosophy of Science, Tilburg University, 5000 LE Tilburg, The Netherlands;1. School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China;2. School of Physics and Electronic Information, Hubei University of Education, Wuhan 430205, China;3. Scientific Research Department, Air Force Early Warning Academy, Wuhan 430019, China;4. Department of Electronic Science, Huizhou University, Guangdong 516001, China;1. University of Geneva, Department of Philosophy, Switzerland;2. Institut Néel (CNRS) & Chair of Excellence in Philosophy of Quantum Physics, Université Grenoble Alpes, Grenoble, France;1. The Niels Bohr Institute, Copenhagen University, Blegdamsvej 17, DK-2100 Copenhagen, Denmark;2. IMAPP, Radboud University, Heyendaalseweg 135, 6525 AJ, Nijmegen, The Netherlands;3. Institute of Theoretical and Experimental Physics, B. Cheremushkinskaya 25, 117218 Moscow, Russia;1. Department of Computer Science, Loughborough University, UK;2. Department of Computer Science, Kiel University, Germany |
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| Abstract: | GRW theory postulates a stochastic mechanism assuring that every so often the wave function of a quantum system is ‘hit’, which leaves it in a localised state. How are we to interpret the probabilities built into this mechanism? GRW theory is a firmly realist proposal and it is therefore clear that these probabilities are objective probabilities (i.e. chances). A discussion of the major theories of chance leads us to the conclusion that GRW probabilities can be understood only as either single case propensities or Humean objective chances. Although single case propensities have some intuitive appeal in the context of GRW theory, on balance it seems that Humean objective chances are preferable on conceptual grounds. |
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