Causal structures in dRGT Massive gravity

From Lecospa
Jump to: navigation, search

In General Relativity, gravitons propagate to null directions, because of its well-organized structures. Modifying the gravity theory slightly, meanwhile, the beautiful structure is broken and gravitons can easily propagate superluminaly. Here, applying the characteristic method, which is the well-established powerful way to analyze causal structures, the causal structures in nonlinear Massive gravity (called dRGT theory) are discussed. We discuss the superluminality and acausality appearing in this theory.