PIRSA:23100006 Conference Quantum Gravity

DOI10.48660/23100006

Conference/School: Puzzles in the Quantum Gravity Landscape: viewpoints from different approaches

Holdom, B. (2023). UV complete 4-derivative scalar field theory. Perimeter Institute. https://pirsa.org/23100006

Holdom, Bob. UV complete 4-derivative scalar field theory. Perimeter Institute, Oct. 24, 2023, https://pirsa.org/23100006 

@misc{ pirsa_PIRSA:23100006,
  doi = {10.48660/23100006},
  url = {https://pirsa.org/23100006},
  author = {Holdom, Bob},
  keywords = {Quantum Gravity},
  language = {en},
  title = {UV complete 4-derivative scalar field theory},
  publisher = {Perimeter Institute},
  year = {2023},
  month = {oct},
  note = {PIRSA:23100006 see, \url{https://pirsa.org}}
}

Abstract

A scalar field theory with 4-derivative kinetic terms and 4-derivative cubic and quartic couplings is presented as a proxy for quadratic gravity. Unitarity and positivity appear as the key issues in the scalar field theory, just as they do in quadratic gravity. We have extended some calculations to show how these issues are resolved in the high energy limit of the theory. The results also show how it is that differential cross sections can have good high energy behaviour.

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