PSA2016: The 25th Biennial Meeting of the Philosophy of Science Association

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The (a)temporal emergence of spacetime

This talk discusses tentative insights into the 'big bang', offered by quantum theories of gravity. The focus is the question of how the spacetime of general relativity might have evolved from a non-spatiotemporal state of the universe: or better, if the process is itself atemporal, how did it 'emerge'? We discuss three examples from the literature: Gasperini's string theoretic pre-big bang T-dual state that expands (without inflation) to the current spatiotemporal state; Bojowald's postulated existence in loop quantum gravity of a mirror universe behind the big bang; and Oriti's proposal of 'geometrogenesis' in group field theory.

Author Information:

Nick Huggett    
University of Illinois at Chicago

Christian W├╝thrich    
University of Geneva


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