@article{f6f8f9fb40ca4705b233cdc39b4c9a4d,
title = "Null infinity, the BMS group and infrared issues",
abstract = "There has been a recent resurgence of interest in the structure of the gravitational field at null infinity, sparked by new results on soft charges and infrared issues related to the S matrix theory in perturbative quantum gravity. We summarize these developments and put them in the broader context of research in the relativity community that dates back to several decades. In keeping with intent of this series, this overview is addressed to gravitational scientists who are not experts in this specific area.",
author = "Abhay Ashtekar and Miguel Campiglia and Alok Laddha",
note = "Funding Information: Acknowledgements This article was motivated by questions raised by several colleagues, especially Eanna Flanagan, John Friedman and Bob Wald during the GR21 conference. We have also benefited from discussions with participants of the 2018 Solvay workshop on Infrared Physics and extensive discussions with Ashoke Sen, Prahar Mitra and Lionel Mason on soft theorems and related issues. Referee{\textquoteright}s comments and correspondence with experts on the first version of this paper led to several clarifications in the final version. This work is supported in part by the NSF Grants PHY-1505411, PHY-1806356, the Urania Stott fund of Pittsburgh foundation, the Eberly research funds of Penn State and PEDECIBA and SNI of Uruguay. Publisher Copyright: {\textcopyright} 2018, Springer Science+Business Media, LLC, part of Springer Nature.",
year = "2018",
month = nov,
day = "1",
doi = "10.1007/s10714-018-2464-3",
language = "English (US)",
volume = "50",
journal = "General Relativity and Gravitation",
issn = "0001-7701",
publisher = "Springer New York",
number = "11",
}