Seminar Series

The nature of time and the evolving block universe

Speaker

Professor George Ellis, a visiting Erskine Fellow

Institute

Time & Place

Fri, 19 Aug 2016 11:00:00 NZST in Rutherford 531, Level 5

All are welcome

Abstract

The passage of time is often supposed to be an illusion, because of the time symmetry of the underlying physics and the nature of the 4-dimensional block universe spacetime. This talk will propose that spacetime is actually an evolving block universe where time does in deed pass. The present is the ever-changing future boundary of spacetime, determined by proper time along uniquely defined Ricci eigenlines. This relates to the proposal that the passage of time is related to the collapse of the quantum wavefunction, which is taking place all the time everywhere, and in fact makes microphysics time irreversible.