Asymptotically Weyl-invariant gravity

TY - JOUR

T1 - Asymptotically Weyl-invariant gravity

AU - Coumbe, Daniel

PY - 2019/11/10

Y1 - 2019/11/10

N2 - We propose a novel theory of gravity that by construction is renormalizable, evades Ostrogradsky's no-go theorem, is locally scale-invariant in the high-energy limit, and equivalent to general relativity in the low-energy limit. The theory is defined by a pure f(R) = Rn action in the Palatini formalism, where the dimensionless exponent n runs from a value of two in the high-energy limit to one in the low-energy limit. We show that the proposed model contains no obvious cosmological curvature singularities. The viability of the proposed model is qualitatively assessed using several key criteria.

AB - We propose a novel theory of gravity that by construction is renormalizable, evades Ostrogradsky's no-go theorem, is locally scale-invariant in the high-energy limit, and equivalent to general relativity in the low-energy limit. The theory is defined by a pure f(R) = Rn action in the Palatini formalism, where the dimensionless exponent n runs from a value of two in the high-energy limit to one in the low-energy limit. We show that the proposed model contains no obvious cosmological curvature singularities. The viability of the proposed model is qualitatively assessed using several key criteria.

KW - General relativity

KW - f(R) gravity

KW - Palatini gravity

KW - quantum gravity

U2 - 10.1142/S0217751X19502051

DO - 10.1142/S0217751X19502051

M3 - Journal article

SN - 0217-751X

VL - 34

JO - International Journal of Modern Physics A

JF - International Journal of Modern Physics A

IS - 31

M1 - 1950205

ER -