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Information is Not Lost in the Evaporation of 2-dimensional Black Holes · Around

2008

Information is Not Lost in the Evaporation of 2-dimensional Black Holes

Ashtekar, Abhay, Taveras, Victor, Varadarajan, Madhavan

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We analyze Hawking evaporation of the Callen-Giddings-Harvey-Strominger (CGHS) black holes from a quantum geometry perspective and show that information is not lost, primarily because the quantum space-time is sufficiently larger than the classical.

Using suitable approximations to extract physics from quantum space-times we establish that: i)future null infinity of the quantum space-time is sufficiently long for the the past vacuum to evolve to a pure state in the future; ii) this state has a finite norm in the future Fock space; and iii) all the information comes out at future infinity; there are no remnants.

Built on

S.W. Hawking, Commun. Math. Phys. 43
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R. Geroch and G. T. Horowitz, Phys. Rev. Lett. 40
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C. G. Callan, S. B. Giddings, J.A. Harvey and A. Strominger, Phys. Rev. D 45
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D. Lowe, Phys. Rev. D 47
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Similar

S. Hayward, Class. Quantum Grav. 10
1993
Cited alongside, same era.
A. Mikovič, Class. Quantum Grav. 13
1996
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K. Kuchař, J. Romano and M. Varadajaran, Phys. Rev. D 55
1998
Cited alongside, same era.
S.B. Giddings, arXiv:Hep-th/9412138; A. Strominger, arXiv:Hep-th/9501071
Cited in the paper.

Then

M. Dütsch and K. Fredenhagen, Commun. Math.Phys. 203
1999
Later among the works it cites.
A. Ashtekar and M. Bojowald, Class. Quantum Grav. 22
2005
Later among the works it cites.
A. Ashtekar, T. Pawlowski, P. Singh, Phys. Rev. Lett. 96
2006
Later among the works it cites.

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