Conserved charges in asymptotically de Sitter spacetimes
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Publication:5159978
DOI10.1088/1361-6382/AB3BE7zbMATH Open1478.83046arXiv1902.07415OpenAlexW2969944994MaRDI QIDQ5159978
Author name not available (Why is that?)
Publication date: 28 October 2021
Published in: (Search for Journal in Brave)
Abstract: We present a covariant phase space construction of hamiltonian generators of asymptotic symmetries with `Dirichlet' boundary conditions in de Sitter spacetime, extending a previous study of J"ager. We show that the de Sitter charges so defined are identical to those of Ashtekar, Bonga, and Kesavan (ABK). We then present a comparison of ABK charges with other notions of de Sitter charges. We compare ABK charges with counterterm charges, showing that they differ only by a constant offset, which is determined in terms of the boundary metric alone. We also compare ABK charges with charges defined by Kelly and Marolf at spatial infinity of de sitter spacetime. When the formalisms can be compared, we show that the two definitions agree. Finally, we express Kerr-de Sitter metrics in four and five dimensions in an appropriate Fefferman-Graham form.
Full work available at URL: https://arxiv.org/abs/1902.07415
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