Evaporação Unitária de Buracos Negros

Abstract

The Hawking’s proposal about the Black Hole evaporation brought to the physicists The Information Paradox. Since then, arguments in favor and against the the process’s unitarity has arisen. Nowadays, the unitary evaporation is the most acceptable proposal, because it keeps the Quantum Mechanics safe. With the recent progress in holography, new proposals to justify the unitarity have emerged. In this monograph, we will explain how the Black Hole unitary evaporation is justified by means of the von Neumann Entropy in a gravitational background with Quantum Extremal Surfaces and space-time regions called Islands.