Low-energy effects in a higher-derivative gravity model with real and complex massive poles
Low-energy effects in a higher-derivative gravity model with real and complex massive poles
The most simple superrenormalizable model of quantum gravity is based on the general local covariant six-derivative action. In addition to graviton such a theory has massive scalar and tensor modes. It was shown recently that in the case when the massive poles emerge in complex conjugate pairs, the theory has …