paper

Note on the asymptotic structure of Kerr-Schild form

arXiv:2109.09676 · doi:10.1007/JHEP01(2022)030

Abstract

The Kerr-Schild form provides a natural way of realizing the classical double copy that relates exact solutions in general relativity to exact solutions in gauge theory. In this paper, we examine the asymptotic structure of Kerr-Schild form. In Newman-Unti gauge, we find a generic solution space satisfying the Kerr-Schild form in series expansion around null infinity. The news function in the solution space is chiral and can not lead to a mass loss formula. A class of asymptotically flat complex pp-wave solutions in closed form is obtained from the solution space.

v2: refs added, interpretations about several issues improved v3: refs added, major revision, published in JHEP

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