University of Cambridge > > mdt26's list > Beyond the quantum

Beyond the quantum

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Dr. Mike Towler.

This talk has been canceled/deleted

According to hidden-variables theories, quantum physics is a special ‘equilibrium’ case of a much wider ‘nonequilibrium’ physics. We describe the search for that wider physics in a cosmological context. The hypothesis that the universe began in a state of quantum nonequilibrium is shown to have observable consequences. In de Broglie-Bohm theory on expanding space, relaxation to quantum equilibrium is shown to be suppressed for field modes whose quantum time evolution satisfies a certain inequality, resulting in a ‘freezing’ of early nonequilibrium for these particular modes. For an early radiation-dominated expansion, the inequality implies a corresponding physical wavelength that is larger than the (instantaneous) Hubble radius. These results make it possible, for the first time, to make quantitative predictions for deviations from quantum theory. We consider, in particular, corrections to inflationary predictions for the cosmic microwave background, and the possibility of finding relic cosmological particles that violate the laws of quantum mechanics. (References: De Broglie-Bohm Prediction of Quantum Violations for Cosmological Super-Hubble Modes,, and feature article in November 2009 issue of Physics World.)

This talk is part of the mdt26's list series.

Tell a friend about this talk:

This talk is included in these lists:

This talk is not included in any other list

Note that ex-directory lists are not shown.


© 2006-2022, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity