Izumi, K. (2015). Causal structures in Massive gravity and Gauss-Bonnet gravity. Perimeter Institute for Theoretical Physics. https://pirsa.org/15040099
MLA
Izumi, Keisuke. Causal structures in Massive gravity and Gauss-Bonnet gravity. Perimeter Institute for Theoretical Physics, Apr. 09, 2015, https://pirsa.org/15040099
BibTex
@misc{ scivideos_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 for Theoretical Physics},
year = {2015},
month = {apr},
note = {PIRSA:15040099 see, \url{https://scivideos.org/pirsa/15040099}}
}
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.
