w(1+infinity) Algebra with a Cosmological Constant and the Celestial Sphere
High Energy Physics - Theory
2023-12-12 v2 General Relativity and Quantum Cosmology
Abstract
It is shown that in the presence of a nonvanishing cosmological constant, Strominger's infinite-dimensional algebra of soft graviton symmetries is modified in a simple way. The deformed algebra contains a subalgebra generating or symmetry groups of or , depending on the sign of the cosmological constant. The transformation properties of soft gauge symmetry currents under the deformed are also discussed.
Cite
@article{arxiv.2312.00876,
title = {w(1+infinity) Algebra with a Cosmological Constant and the Celestial Sphere},
author = {Tomasz R. Taylor and Bin Zhu},
journal= {arXiv preprint arXiv:2312.00876},
year = {2023}
}