Testing Higher Derivative Gravity through Tunnelling

Ruth Gregory, Shi Qian Hu*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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Abstract

Higher derivative terms in the gravitational action are natural from the perspective of quantum gravity, but are perceived as leading to a lack of well-posedness. The Gauss–Bonnet term has second-order equations of motion, but does not impact gravitational dynamics in 4D, so one might expect that it is not physically relevant. We discuss how signatures can show up in tunnelling processes and whether these will likely be physically accessible in Higgs vacuum decay.

Original languageEnglish
Pages (from-to)144-160
Number of pages17
JournalParticles
Volume7
Issue number1
DOIs
Publication statusPublished - 16 Feb 2024

Keywords

  • black holes
  • instanton
  • tunnelling

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