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  • Letter
  • Open Access

Asymptotic freedom in (3+1)-dimensional projectable Hořava gravity: Connecting the ultraviolet and infrared domains

Andrei O. Barvinsky1,2, Alexander V. Kurov1, and Sergey M. Sibiryakov3,4

  • 1Theory Department, Lebedev Physics Institute, Leninsky Prospect 53, Moscow 117924, Russia
  • 2Institute for Theoretical and Mathematical Physics, Moscow State University, Leninskie Gory, GSP-1, Moscow, 119991, Russia
  • 3Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S 4M1, Canada
  • 4Perimeter Institute for Theoretical Physics, Waterloo, Ontario, N2L 2Y5, Canada

Phys. Rev. D 108, L121503 – Published 18 December, 2023

DOI: https://doi.org/10.1103/PhysRevD.108.L121503

Abstract

We investigate the renormalization group flow of projectable Hořava gravity in (3+1) dimensions generated by marginal operators with respect to the Lifshitz scaling. The flow possesses a number of asymptotically free fixed points. We find a family of trajectories connecting one of these fixed points in the ultraviolet to the region of the parameter space where the kinetic term of the theory acquires the general relativistic form. The gravitational coupling exhibits nonmonotonic behavior along the flow, vanishing both in the ultraviolet and the infrared.

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