Horava Gravity is Asymptotically Free in 2+1 Dimensions

We compute the beta functions of marginal couplings in projectable Horava 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 Horava gravity.


Published in:
Physical Review Letters, 119, 21, 211301
Year:
2017
Publisher:
College Pk, American Physical Society
ISSN:
0031-9007
Laboratories:




 Record created 2017-12-04, last modified 2018-01-28


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