Abstract
Relevant deformations of gravity present an exciting window of opportunity to probe the rigidity of gravity on cosmological scales. For a single-graviton theory, the leading relevant deformation constitutes a graviton mass term.In this paper, we investigate the classical and quantum stability of massive cosmologicalgravitons on generic Friedman backgrounds. For a Universe expanding towards a deSitter epoch, we find that massive cosmological gravitons are self-protected againstunitarity violations by a strong coupling phenomenon.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Published version (
Free)
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
