Hořava Gravity is Asymptotically Free in 2+1 Dimensions Academic Article uri icon

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  • We compute the β functions of marginal couplings in projectable Hořava gravity in 2+1 spacetime dimensions. We show that the renormalization group flow has an asymptotically free fixed point in the ultraviolet (UV), establishing the theory as a UV-complete model with dynamical gravitational degrees of freedom. Therefore, this theory may serve as a toy model to study fundamental aspects of quantum gravity. Our results represent a step forward towards understanding the UV properties of realistic versions of Hořava gravity.


  • Barvinsky, Andrei O
  • Blas, Diego
  • Herrero-Valea, Mario
  • Sibiryakov, Sergey
  • Steinwachs, Christian F

publication date

  • November 24, 2017