University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Friday, May 5th 2017
Speaker: Andrew Matas (University of Minnesota)
Subject: Aspects of Massive Gravity

I will review the motivation for and construction of a theory of Lorentz-invariant massive gravity which is free of the Boulware-Deser ghost. After giving an overview of observational constraints on massive gravity, I will describe in more detail spherically symmetric solutions which exhibit the Vainshtein screening mechanism, which is required to avoid the van Dam-Veltman-Zakharov discontinuity. I will show how these solutions can be used to study fifth force effects in the solar system, as well as scalar radiation from binary pulsars.

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