Gravitational wave memory in conformally flat spacetimes

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We study the gravitational wave memory effect in spacetimes related to flat space by a conformal transformation. The discussion is general but the gravitational wave length scale is assumed to be small compared with the background curvature radius. The general formulas are applied to Friedmann-Robertson-Walker metrics of all spatial curvatures. The effect of new terms stemming from spatial curvature is potentially detectable in future gravitational wave measurements.
Original languageEnglish
Article number55
JournalJournal of High Energy Physics
Issue number5
Number of pages29
Publication statusPublished - 8 May 2023
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 114 Physical sciences
  • 115 Astronomy, Space science

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