Date(s) - 19/05/2014
5:15 pm - 6:45 pm
Lakatos (LAK) 2.06
Speaker: Owen Maroney (Oxford)
Time: 5:15pm – 6:45pm
Title: How epistemic can a quantum state be?
The “psi-epistemic” view is that the quantum state does not represent a state of the world, but a state of knowledge about the world. It draws its motivation, in part, from the observation of qualitative similarities between characteristic properties of non-orthogonal quantum wave functions and between overlapping classical probability distributions.
It might be suggested that this gives a natural explanation for these properties, which seem puzzling for the alternative “psi-ontic” view. However, looking at the two such similarities, quantum state overlap and quantum state discrimination, it will be shown that the psi-epistemic view cannot account for these values shown by quantum theory, and must instead rely on the same kind of explanations as the “psi-ontic” view.