The Black Hole Information Paradox

Hawking's information paradox arises when one considers the formation and subsequent evaporation of a black hole. It pits quantum mechanical unitarity against locality in spacetime and highlights the incompatibility between the world view offered by general relativity and that of quantum physics. In a gravity theory with a gauge theory dual, the information paradox must be resolved in favor of unitary evolution. The challenge is then to identify the non-local effects that implement unitarity on the gravity side.