TY - JOUR
T1 - Information is not lost in the evaporation of 2D black holes
AU - Ashtekar, Abhay
AU - Taveras, Victor
AU - Varadarajan, Madhavan
PY - 2008/5/27
Y1 - 2008/5/27
N2 - We analyze Hawking evaporation of the Callan-Giddings-Harvey-Strominger 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) the future null infinity of the quantum space-time is sufficiently long for 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.
AB - We analyze Hawking evaporation of the Callan-Giddings-Harvey-Strominger 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) the future null infinity of the quantum space-time is sufficiently long for 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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U2 - 10.1103/PhysRevLett.100.211302
DO - 10.1103/PhysRevLett.100.211302
M3 - Article
C2 - 18518597
AN - SCOPUS:44449084788
SN - 0031-9007
VL - 100
JO - Physical review letters
JF - Physical review letters
IS - 21
M1 - 211302
ER -