%0 Generic %1 Lloyd2013Unitarity %A Lloyd, Seth %A Preskill, John %D 2013 %K firewall %T Unitarity of black hole evaporation in final-state projection models %U http://arxiv.org/abs/1308.4209 %X Almheiri et al. have emphasized that otherwise reasonable beliefs about black hole evaporation are incompatible with the monogamy of quantum entanglement, a general property of quantum mechanics. We investigate the final-state projection model of black hole evaporation proposed by Horowitz and Maldacena, pointing out that this model admits cloning of quantum states and polygamous entanglement, allowing unitarity of the evaporation process to be reconciled with smoothness of the black hole event horizon. The model requires finely tuned dynamics to ensure exact unitarity, but unitarity holds to an excellent approximation under weaker assumptions. Final-state projection models illustrate how inviolable principles of standard quantum mechanics might be circumvented in a theory of quantum gravity.

@misc{Lloyd2013Unitarity, abstract = {{Almheiri et al. have emphasized that otherwise reasonable beliefs about black hole evaporation are incompatible with the monogamy of quantum entanglement, a general property of quantum mechanics. We investigate the final-state projection model of black hole evaporation proposed by Horowitz and Maldacena, pointing out that this model admits cloning of quantum states and polygamous entanglement, allowing unitarity of the evaporation process to be reconciled with smoothness of the black hole event horizon. The model requires finely tuned dynamics to ensure exact unitarity, but unitarity holds to an excellent approximation under weaker assumptions. Final-state projection models illustrate how inviolable principles of standard quantum mechanics might be circumvented in a theory of quantum gravity.}}, added-at = {2019-02-26T10:37:35.000+0100}, archiveprefix = {arXiv}, author = {Lloyd, Seth and Preskill, John}, biburl = {https://www.bibsonomy.org/bibtex/2ea70558db417d1129fd33ead7cb42af8/acastro}, citeulike-article-id = {12590162}, citeulike-linkout-0 = {http://arxiv.org/abs/1308.4209}, citeulike-linkout-1 = {http://arxiv.org/pdf/1308.4209}, day = 20, eprint = {1308.4209}, interhash = {7405258d28a96cc02b16ac9767a8223e}, intrahash = {ea70558db417d1129fd33ead7cb42af8}, keywords = {firewall}, month = aug, posted-at = {2013-08-21 03:38:30}, priority = {2}, timestamp = {2019-02-26T10:37:35.000+0100}, title = {{Unitarity of black hole evaporation in final-state projection models}}, url = {http://arxiv.org/abs/1308.4209}, year = 2013 }