From the abstract: "We consider here the possibility of quantum gravity induced violation of Lorentz symmetry (LV)." The paper is such that they mights as well

From the abstract: "We consider here the possibility of quantum gravity induced violation of Lorentz symmetry (LV)." The paper is such that they mights as well have considered the possibility of gremlin induced violation of LV: it purely theoretical speculation. Mathematical masturbation: look what fun results we can derive if we make this exotic assumption.