 Rainbow gravity theory

Rainbow gravity is a theoretical framework in the field of quantum gravity that suggests the structure of spacetime may depend on the energy of the observer, leading to a "rainbow" of different gravitational effects based on the energy levels of particles. This theory is primarily explored in the context of various models that seek to unify general relativity and quantum mechanics. The fundamental idea is that the laws of physics, particularly those related to gravity, could vary depending on the energy at which an observer measures them.