PIRSA:15040099

Causal structures in Massive gravity and Gauss-Bonnet gravity

Izumi, K. (2015). Causal structures in Massive gravity and Gauss-Bonnet gravity. Perimeter Institute. https://pirsa.org/15040099

Izumi, Keisuke. Causal structures in Massive gravity and Gauss-Bonnet gravity. Perimeter Institute, Apr. 09, 2015, https://pirsa.org/15040099 

          @misc{ pirsa_PIRSA:15040099,
            doi = {10.48660/15040099},
            url = {https://pirsa.org/15040099},
            author = {Izumi, Keisuke},
            keywords = {Cosmology},
            language = {en},
            title = {Causal structures in Massive gravity and Gauss-Bonnet gravity},
            publisher = {Perimeter Institute},
            year = {2015},
            month = {apr},
            note = {PIRSA:15040099 see, \url{https://pirsa.org}}
          }

Keisuke Izumi National Taiwan University

DOI 10.48660/15040099
Collection
Talk Type Conference
Subject

Abstract

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 Massive gravity and Gauss-Bonnet gravity are analyzed. We discuss the superluminality, acausality and black holes.