Monday, April 15, 2013
4:00 pm
Lauritsen 469

High Energy Physics Seminar

Evidence for and Obstructions to Partially Massless Gravity
Kurt Hinterbichler, Perimeter Institute

    On de Sitter space, there exists a special value for the mass of a graviton for which the linear theory propagates 4 rather than 5 degrees of freedom.  If a fully non-linear version of the theory exists and can be coupled to known matter, it would have very interesting properties and could solve the cosmological constant problem.  I will describe evidence for and obstructions to the existence of such a theory.


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