PIRSA:15040099 Conference Cosmology

DOI10.48660/15040099

Conference/School: Superluminality in Effective Field Theories for Cosmology

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}}
}

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.

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