Unitarity is a pillar of quantum theory. Nevertheless, it is also a source of several of its conceptual problems. We note that in a world where measurements are relational, as is the case in gravitation, quantum mechanics exhibits a fundamental level of loss of coherence. This can be the key to solving, among others, the puzzles posed by the black hole information paradox, the formation of inhomogeneities in cosmology and the measurement problem in quantum mechanics. © World Scientific Publishing Company.
Publication Source (Journal or Book title)
International Journal of Modern Physics D
Gambini, R., Porto, R., & Pullin, J. (2006). Fundamental spatio-temporal decoherence: A key to solving the conceptual problems of black holes, cosmology and quantum mechanics. International Journal of Modern Physics D, 15 (12), 2181-2185. https://doi.org/10.1142/S0218271806009613