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Soft theorems in de Sitter spacetime (2308.08861v2)

Published 17 Aug 2023 in hep-th and gr-qc

Abstract: In this paper, we derive a soft photon theorem and a soft gluon theorem in the de Sitter spacetime from the Ward identity of the near cosmological horizon large gauge transformation. Taking the flat limit of the de Sitter spacetime, the soft theorems naturally recover the corresponding flat spacetime soft theorems.

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Authors (2)

  1. Pujian Mao
  2. Kai-Yu Zhang
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