© 1996 by British Society for the Philosophy of Science
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Articles |
The Properties of Modal Interpretations of Quantum Mechanics
Department of Philosophy, The University of Western Ontario London, Ontario N6A 3K7, Canada
Orthodox quantum mechanics includes the principle that an observable of a system possesses a well-defined value if and only if the presence of that value in the system is certain to be confirmed on measurement. Modal interpretations reject the controversial only if half of this principle to secure definite outcomes for quantum measurements that leave the apparatus entangled with the object it has measured. However, using a result that turns on the construction of a KochenSpecker contradiction, I argue that modal interpretations cannot deliver a metaphysically tenable conception of properties in quantum mechanics unless they also abandon the less controversial if half of the orthodox principle.