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PERIMETER INSTITUTE RECORDED SEMINAR ARCHIVE

Time, cosmology and quantum foundations
Speaker(s): Lee Smolin
Abstract: I argue that quantum mechanics cannot usefully  be extended to a theory of the whole universe, so the task of quantum foundations is to discover that cosmological theory which reduces to quantum mechanics when restricted to small subsystems of the universe.  I argue that that cosmological theory will be based on a global notion of physical time which implies the distinction between past, present and future is real and objective.  These motivate two examples of novel formulations of quantum theory: the real ensemble formulation and the principle of precedence.  Each may imply departures from the expected quantum evolution for sufficiently large and complex quantum systems. 
Date: 31/05/2013 - 11:00 am
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