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2012

Black Holes, Information, and Hilbert Space for Quantum Gravity

Nomura, Yasunori, Varela, Jaime, Weinberg, Sean J.

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A coarse-grained description for the formation and evaporation of a black hole is given within the framework of a unitary theory of quantum gravity preserving locality, without dropping the information that manifests as macroscopic properties of the state at late times.

The resulting picture depends strongly on the reference frame one chooses to describe the process.
In one description based on a reference frame in which the reference point stays outside the black hole horizon for sufficiently long time, a late black hole state becomes a superposition of black holes in different locations and with different spins, even if the back hole is formed from collapsing matter that had a well-defined classical configuration with no angular momentum.
The information about the initial state is partly encoded in relative coefficients---especially phases---of the terms representing macroscopically different geometries.

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R. Bousso, JHEP 07

1999

Cited alongside, same era.

Y. Nomura, arXiv:1110.4630 [hep-th]

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Y. Nomura, J. Varela and S. J. Weinberg, arXiv:1207.6626 [hep-th]

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R. Brustein, arXiv:1209.2686 [hep-th]

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A. Almheiri, D. Marolf, J. Polchinski and J. Sully, arXiv:1207.3123 [hep-th]

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2012

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S. B. Giddings, Class. Quant. Grav. 28

2012

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