Particle theory seminar: Kurt Hinterbichler (Case Western) “Massive and Partially Massless Gravity”

Event time: 
Tuesday, May 2, 2017 - 3:30pm to 4:30pm
Sloane Physics Laboratory (SPL), 52 See map
217 Prospect St.
New Haven, CT 06511
Event description: 

“Massive and Partially Massless Gravity”

I will review recent developments in the non-linear theory of massive gravitons, or spin-2 fields. 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 interesting properties and could solve the cosmological constant problem. I will describe evidence for and obstructions to the existence of such a theory, and the recent development of Vasiliev-like theories that include towers of massless and partially massless fields.