Null infinity,the BMS group and infrared issues |
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Authors: | Abhay Ashtekar Miguel Campiglia Alok Laddha |
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Affiliation: | 1.Institute for Gravitation and the Cosmos and Physics Department,Penn State,University Park,USA;2.Instituto de Física, Facultad de Ciencias,Montevideo,Uruguay;3.Chennai Mathematical Institute,Siruseri, Chennai,India |
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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. |
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