No seminar
Speaker: Chunshan Lin, 

Title: ``SO(3) massive gravity"
Abstract: In this talk, we will introduce a new massive gravity theory with 5 d.o.f in the gravity sector. The mass term is constructed by 3 scalars which respect SO(3) symmetry in fields' configuration.  By the analysis of linear cosmological perturbations, we find such theory is free from ghost instability, gradient instability, and tachyonic instability.

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