The problem of discovering a theory explaining the quantum effects on gravity is quantum gravity (QG). Quantum gravity phenomena, preceding inflation, are believed to have dominated the very earliest times. There are many hypotheses of the universe’s quantum origin, but none have reached hegemony.
The canonical approaches to quantum gravity emphasize the mathematical aspects and seem well placed to tackle unanswered theoretical problems of quantum gravity, such as the problem of time or the definition of the wave function of the universe.
General relativity, discovered by Einstein, explains how gravity shapes the universe’s structure. But there is no balance between the two great theories of physics and cosmology. But, because both describe reality, this is impossible.