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Gravity as Gauge Theory Squared: A Ghost Story

Year: 2018
Type: article
Abstract: The Becchi-Rouet-Stora-Tyutin (BRST) transformations and equations of motion of a gravity-two-form-dilaton system are derived from the product of two Yang-Mills theories in a BRST covariant form, to linear approximation. The inclusion of ghost fields facilitates the separation of the graviton and dilaton. The gravitational gauge fixing term is uniquely determined by those of the Yang-Mills factors which can be freely chosen. Moreover, the resulting gravity-two-form-dilaton Lagrangian is anti-BRST invariant and the BRST and anti-BRST charges anticommute as a direct consequence of the formalism.
DOI: 10.1103/physrevlett.121.211601
Institutions: Nordic Institute for Theoretical Physics, Stockholm University, KTH Royal Institute of Technology, Dublin Institute For Advanced Studies, University of Oxford, Imperial College London, Texas A&M University, University of Nottingham
Language: English
Open Access status: hybrid
Estimated APC paid: $3,750
Funders: Leverhulme Trust, University of Oxford, University of Nottingham, Hagler Institute for Advanced Study, Texas A&M University, Engineering and Physical Sciences Research Council, Science and Technology Facilities Council, Mathematical Institute, University of Oxford
OpenAlex ID: W2901828596
FWCI: 6.741
Cites: 44
Cited by: 103
Related to: 10