J. High Energ. Phys. 1911 (2019) 005 arXiv link
Asymptotic structure of Einstein-Maxwell-dilaton theory and its five dimensional origin
H. Lü1, Pujian Mao1, Jun-Bao Wu1,2
1. Center for Joint Quantum Studies and Department of Physics, School of Science, Tianjin University, Tianjin, China
2. Center for High Energy Physics, Peking University, Beijing, China
Email: pjmao@tju.edu.cn
Abstract
We consider Einstein-Maxwell-dilaton theory in four dimensions including the Kaluza-Klein theory and obtain the general asymptotic solutions in Bondi gauge. We find that there are three different types of news functions representing gravitational, electromagnetic, and scalar radiations. The mass density at any angle of the system can only decrease whenever there is any type of news function. The solution space of the Kaluza-Klein theory is also lifted to five dimensions. We also compute the asymptotic symmetries in both four dimensional Einstein-Maxwell-dilaton theory and five dimensional pure Einstein theory. We find that the symmetry algebras of the two theories are the same.
