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Chiral massive news: null boundary symmetries in topologically massive gravity

H. Adami Yau Mathematical Sciences Center, Tsinghua University, Beijing, 100084, China; Beijing Institute of Mathematical Sciences and Applications (BIMSA), Huairou District, Beijing, 101408, P. R. China M.M. Sheikh-Jabbari School of Physics, Institute for Research in Fundamental Sciences (IPM), P.O.Box 19395-5531, Tehran, Iran V. Taghiloo Department of Physics, Institute for Advanced Studies in Basic Sciences (IASBS), P.O. Box 45137-66731, Zanjan, Iran H. Yavartanoo Beijing Institute of Mathematical Sciences and Applications (BIMSA), Huairou District, Beijing, 101408, P. R. China C. Zwikel Institute for Theoretical Physics, TU Wien, Wiedner Hauptstrasse 8–10/136, A-1040, Vienna, Austria

arXiv subject: High Energy Physics - Theory (hep-th) mathscidoc:2206.74028

Journal of High Energy Physics, 2021, 261, 2021.5
We study surface charges on a generic null boundary in three dimensional topological massive gravity (TMG). We construct the solution phase space which involves four independent functions over the two dimensional null boundary. One of these functions corresponds to the massive chiral propagating graviton mode of TMG. The other three correspond to three surface charges of the theory, two of which can always be made integrable, while the last one can become integrable only in the absence of the chiral massive graviton flux through the null boundary. As the null boundary symmetry algebra we obtain Heisenberg ⊕ Virasoro algebra with a central charge proportional to the gravitational Chern-Simons term of TMG. We also discuss that the flux of the chiral massive gravitons appears as the (Bondi) news through the null surface.
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@inproceedings{h.2021chiral,
  title={Chiral massive news: null boundary symmetries in topologically massive gravity},
  author={H. Adami, M.M. Sheikh-Jabbari, V. Taghiloo, H. Yavartanoo, and C. Zwikel},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220622152537126512444},
  booktitle={Journal of High Energy Physics},
  volume={2021},
  pages={261},
  year={2021},
}
H. Adami, M.M. Sheikh-Jabbari, V. Taghiloo, H. Yavartanoo, and C. Zwikel. Chiral massive news: null boundary symmetries in topologically massive gravity. 2021. Vol. 2021. In Journal of High Energy Physics. pp.261. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220622152537126512444.
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