Gravity and Rapid Tunnelling


Copsey, K. (2011). Gravity and Rapid Tunnelling. Perimeter Institute for Theoretical Physics.


Copsey, Keith. Gravity and Rapid Tunnelling. Perimeter Institute for Theoretical Physics, Aug. 24, 2011,


          @misc{ scivideos_PIRSA:11080145,
            doi = {10.48660/11080145},
            url = {},
            author = {Copsey, Keith},
            keywords = {Cosmology},
            language = {en},
            title = {Gravity and Rapid Tunnelling},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2011},
            month = {aug},
            note = {PIRSA:11080145 see, \url{}}
Source RepositoryPIRSA
Talk Type Scientific Series


I'll discuss my recent results (1108.2255) showing that, once gravity and some technical confusions are taken care of, two classes of potentials one expects to be generic in a landscape, namely ones resulting in thin-wall instantons or with small relative differences in potentials, result in instantons which typically decay rapidly, including exponentially enhanced rates for thin-wall instantons. I'll explain why this is true both generally and in detail and why the previous treatments have gone astray. This meeting will be designed to be a highly informal and interactive session to present these results in detail and address questions, confusions, and challenges of those, esp. cosmologists, with some level of background in tunnelling. I'll give a broader presentation of this material for a more general audience in the strings group meeting (Friday 11am, space room).