Hořava Gravity is Asymptotically Free in 2 + 1 Dimensions

Barvinsky, Andrei O.; Blas, Diego; Herrero-Valea, Mario; Sibiryakov, Sergey M.; Steinwachs, Christian F.

doi:10.1103/PhysRevLett.119.211301

Hořava Gravity is Asymptotically Free in 2 + 1 Dimensions

Andrei O. Barvinsky
(
- Lebedev Inst. and
- Tomsk State U.
)
,
Diego Blas
(
- CERN
)
,
Mario Herrero-Valea
(
- EPFL, Lausanne, LPPC
)
,
Sergey M. Sibiryakov
(
- CERN and
- Ecole Polytechnique, Lausanne and
- EPFL, Lausanne, LPPC and
- Moscow, INR
)
,
Christian F. Steinwachs
(
- Freiburg U.
)

Jun 21, 2017

5 pages

Published in:

Phys.Rev.Lett. 119 (2017) 21, 211301

Published: Nov 20, 2017

e-Print:

1706.06809 [hep-th]

DOI:

10.1103/PhysRevLett.119.211301

Report number:

CERN-TH-2017-100

View in:

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Abstract: (APS)

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.

Note:

Updated references, minor revisions. Matches journal version

dimension: 3
renormalization group: flow
space-time: dimension
gravitation
quantum gravity
ultraviolet
fixed point
toy model

References(28)

Figures(2)

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