Information is not lost in the evaporation of 2D black holes

Abhay Ashtekar, Victor Taveras, Madhavan Varadarajan

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Article number211302
JournalPhysical Review Letters
Volume100
Issue number21
DOIs
StatePublished - May 27 2008

Fingerprint

evaporation
infinity
norms
vacuum
physics
geometry
approximation

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Ashtekar, Abhay ; Taveras, Victor ; Varadarajan, Madhavan. / Information is not lost in the evaporation of 2D black holes. In: Physical Review Letters. 2008 ; Vol. 100, No. 21.
@article{984b07112b574839b209fb070d92e188,
title = "Information is not lost in the evaporation of 2D black holes",
abstract = "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.",
author = "Abhay Ashtekar and Victor Taveras and Madhavan Varadarajan",
year = "2008",
month = "5",
day = "27",
doi = "10.1103/PhysRevLett.100.211302",
language = "English (US)",
volume = "100",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "21",

}

Information is not lost in the evaporation of 2D black holes. / Ashtekar, Abhay; Taveras, Victor; Varadarajan, Madhavan.

In: Physical Review Letters, Vol. 100, No. 21, 211302, 27.05.2008.

Research output: Contribution to journalArticle

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.

UR - http://www.scopus.com/inward/record.url?scp=44449084788&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=44449084788&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.100.211302

DO - 10.1103/PhysRevLett.100.211302

M3 - Article

C2 - 18518597

AN - SCOPUS:44449084788

VL - 100

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 21

M1 - 211302

ER -