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Scientific article
Open access
English

Counting ghosts in the “ghost-free” non-local gravity

ContributorsShapiro, Ilya
Published inPhysics letters. B, vol. 744, p. 67-73
Collection
  • Open Access - SCOAP3
Publication date2015
Abstract

In the recently proposed non-local theory of quantum gravity one can avoid massive tensor ghosts at the tree level by introducing an exponential form factor between the two Ricci tensors. We show that at the quantum level this theory has an infinite amount of massive unphysical states, mostly corresponding to complex poles.

Keywords
  • Quantum gravity
  • Massive ghosts
  • Higher derivatives
  • Renormalization
  • Non-local theories
Citation (ISO format)
SHAPIRO, Ilya. Counting ghosts in the “ghost-free” non-local gravity. In: Physics letters. B, 2015, vol. 744, p. 67–73. doi: 10.1016/j.physletb.2015.03.037
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Article (Published version)
Identifiers
ISSN of the journal0370-2693
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Technical informations

Creation04/27/2015 10:30:28 AM
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Update time03/14/2023 11:12:55 PM
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