Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Sibiryakov, Sergey M."'
We investigate the renormalization group flow of projectable Horava 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
Externí odkaz:
http://arxiv.org/abs/2310.07841
We study the high-energy limit of projectable Ho\v rava gravity using on-shell graviton scattering amplitudes. We compute the tree-level amplitudes using symbolic computer algebra and analyze their properties in the case of collisions with zero total
Externí odkaz:
http://arxiv.org/abs/2306.00102
We derive the full set of beta functions for the marginal essential couplings of projectable Horava gravity in (3 + 1)-dimensional spacetime. To this end we compute the divergent part of the one-loop effective action in static background with arbitra
Externí odkaz:
http://arxiv.org/abs/2110.14688
Publikováno v:
Phys. Rev. D 103, 104007 (2021)
Horava gravity is a proposal for completing general relativity in the ultraviolet by interactions that violate Lorentz invariance at very high energies. We focus on (2+1)-dimensional projectable Horava gravity, a theory which is renormalizable and pe
Externí odkaz:
http://arxiv.org/abs/2103.01975
Publikováno v:
Phys. Rev. D 100, 026012 (2019)
We compute the renormalization group running of the Newton constant and the parameter $\lambda$ in $(3+1)$-dimensional projectable Horava gravity. We use the background field method expanding around configurations with flat spatial metric, but non-va
Externí odkaz:
http://arxiv.org/abs/1905.03798
Autor:
Barvinsky, Andrei O., Blas, Diego, Herrero-Valea, Mario, Sibiryakov, Sergey M., Steinwachs, Christian F.
Publikováno v:
Phys. Rev. Lett. 119, 211301 (2017)
We compute the $\beta$-functions of marginal couplings in projectable Ho\v{r}ava 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 theor
Externí odkaz:
http://arxiv.org/abs/1706.06809
Autor:
Barvinsky, Andrei O., Blas, Diego, Herrero-Valea, Mario, Sibiryakov, Sergey M., Steinwachs, Christian F.
Using the background-field method we demonstrate the Becchi-Rouet-Stora-Tyutin (BRST) structure of counterterms in a broad class of gauge theories. Put simply, we show that gauge invariance is preserved by renormalization in local gauge field theorie
Externí odkaz:
http://arxiv.org/abs/1705.03480
Autor:
Barvinsky, Andrei O., Blas, Diego, Herrero-Valea, Mario, Sibiryakov, Sergey M., Steinwachs, Christian F.
Publikováno v:
Phys. Rev. D 93, 064022 (2016)
We prove perturbative renormalizability of projectable Horava gravity. The key element of the argument is the choice of a gauge which ensures the correct anisotropic scaling of the propagators and their uniform falloff at large frequencies and moment
Externí odkaz:
http://arxiv.org/abs/1512.02250
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