Time asymmetric extensions of general relativity

Lee Smolin (Perimeter Institute)

February 08, 2016

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Abstract: I describe two ways to extend general relativity to a time asymmetric theory and discuss some possible observational consequences of them. These are motivated by Penrose”s hypothesis that the specialness of the cosmological initial conditions needed to explain the arrows of time can in turn be explained as a consequence of a time asymmetric fundamental theory governing the very early universe. This is work with Marina Cortes and Henrique Gomes and is based on arXiv:1503.06085 and arXiv:1507.01229.