Explaining the unobserved: Why quantum theory ain't only about information

Foundations of Physics 36 (9):1295-1234 (2006)
Abstract
A remarkable theorem by Clifton, Bub and Halvorson (2003) (CBH) characterizes quantum theory in terms of information--theoretic principles. According to Bub (2004, 2005) the philosophical significance of the theorem is that quantum theory should be regarded as a ``principle'' theory about (quantum) information rather than a ``constructive'' theory about the dynamics of quantum systems. Here we criticize Bub's principle approach arguing that if the mathematical formalism of quantum mechanics remains intact then there is no escape route from solving the measurement problem by constructive theories. We further propose a (Wigner--type) thought experiment that we argue demonstrates that quantum mechanics on the information--theoretic approach is incomplete.
Keywords quantum information  collapse theories  crucial experiments  principle versus constructive theories
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Citations of this work BETA
Simon Friederich (2011). How to Spell Out the Epistemic Conception of Quantum States. Studies in History and Philosophy of Science Part B 42 (3):149-157.
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