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

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arxiv 0801.1811 v2 pith:ZKW5PHV4 submitted 2008-01-11 gr-qc hep-th

Abhay Ashtekar , Victor Taveras , Madhavan Varadarajan This is my paper · ORCID
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keywords futurequantuminformationblackevaporationholesinfinitylost
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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.

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  1. Asymptotic Algebras and Holography of Information in CGHS Model

    hep-th 2026-06 unverdicted novelty 5.0 of 10

    Establishes holography of information in the CGHS model via asymptotic algebras and argues that islands violate commutativity of left- and right-boundary algebras.

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