Thursday, April 19, 2012, 16:00
WHGA/001
R. Renner, ETHZ
Abstract:
Quantum mechanics is a probabilistic theory, i.e., there is generally
some uncertainty in the predictions it makes about individual
measurement outcomes. One may
therefore ask whether there could exist an extended, more informative
theory, whose predictions would be less uncertain. In this talk, I will
review a recent argument
that answers this question partially: It asserts that any theory that
improves the statistical predictions of quantum theory would necessarily
violate the assumption
that measurements can be chosen freely.