Gedanken experiments involving black holes

Susskind, Leonard; Thorlacius, Lárus

doi:10.1103/physrevd.49.966

Cited by 196 publications

(300 citation statements)

References 12 publications

(18 reference statements)

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“…A similar viewpoint has long been advocated by 't Hooft [2] and more recently by Kiem, Verlinde, and Verlinde [3]. At present, such strange behavior cannot be ruled out because it involves physics at energy scales far beyond anything with which we have any experience [4].…”

Section: Introductionmentioning

confidence: 92%

Black hole complementarity versus locality

et al. 1995

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The evaporation of a large mass black hole can be described throughout most of its lifetime by a low-energy effective theory defined on a suitably chosen set of smooth spacelike hypersurfaces. The conventional argument for information loss rests on the assumption that the effective theory is a local quantum field theory. We present evidence that this assumption fails in the context of string theory. The commutator of operators in light-front string theory, corresponding to certain low-energy observers on opposite sides of the event horizon, remains large even when these observers are spacelike separated by a macroscopic distance. This suggests that degrees of freedom inside a black hole should not be viewed as independent from those outside the event horizon. These nonlocal effects are only significant under extreme kinematic circumstances, such as in the high-redshift geometry of a black hole. Commutators of space-like separated operators corresponding to ordinary low-energy observers in Minkowski space are strongly suppressed in string theory. June, 1995

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Section: Introductionmentioning

confidence: 92%

Black hole complementarity versus locality

et al. 1995

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“…5 Among other places, this fact was discussed in the works [70][71][72] in relation to the consistency between black hole complementarity and the absence of quantum cloning. This geometric-optics observation can easily be extrapolated to classical wave mechanics.…”

Section: Collapsing Stars and Eternal Black Holesmentioning

confidence: 99%

An infalling observer in AdS/CFT

Papadodimas

Raju

2013

J. High Energ. Phys.

346

593

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We describe the experience of an observer falling into a black hole using the AdS/CFT correspondence. In order to do this, we reconstruct the local bulk operators measured by the observer along his trajectory outside the black hole. We then extend our construction beyond the black hole horizon. We show that this is possible because of an effective doubling of the observables in the boundary theory, when it is in a pure state that is close to the thermal state. Our construction allows us to rephrase questions about information-loss and the structure of the metric at the horizon in terms of more familiar CFT correlators. It suggests that to precisely identify black-hole microstates, the observer would need to conduct measurements to an accuracy of e −S BH . This appears to be inconsistent with the "fuzzball" proposal, and other recent proposals in which pure states in the ensemble of the black hole are represented by macroscopically distinct geometries. Furthermore, our description of the black hole interior in terms of CFT operators provides a natural realization of black hole complementarity and a method of preserving unitarity without "firewalls."

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“…In the moving mirror case, there is no formal interior of the black hole and hence it may not be easy to do the same duplication experiment [33], but it will be still possible to apply the Almheiri-Marolf-PolchinskiSully (AMPS) thought experiment [7]. We leave this topic to the next section.…”

Section: Slowly Stopping Mirrormentioning

confidence: 99%

“…Then, the interesting question is whether there is any inconsistency, such as black hole complementarity [6,33]. In the moving mirror case, there is no formal interior of the black hole and hence it may not be easy to do the same duplication experiment [33], but it will be still possible to apply the Almheiri-Marolf-PolchinskiSully (AMPS) thought experiment [7].…”

Section: Slowly Stopping Mirrormentioning

confidence: 99%

Entropy evolution of moving mirrors and the information loss problem

Chen

Yeom

2017

Phys. Rev. D

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We investigate the entanglement entropy and the information flow of two-dimensional moving mirrors. Here we point out that various mirror trajectories can help to mimic different candidate resolutions to the information loss paradox following the semi-classical quantum field theory: (i) a suddenly stopping mirror corresponds to the assertion that all information is attached to the last burst, (ii) a slowly stopping mirror corresponds to the assertion that thermal Hawking radiation carries information, and (iii) a long propagating mirror corresponds to the remnant scenario. Based on such analogy, we find that the last burst of a black hole cannot contain enough information, while slowly emitting radiation can restore unitarity. For all cases, there is an apparent inconsistency between the picture based on quantum entanglements and that based on the semi-classical quantum field theory. Based on the quantum entanglement theory, a stopping mirror will generate a firewalllike violent emission which is in conflict with notions based on the semi-classical quantum field theory. *

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Gedanken experiments involving black holes

Cited by 196 publications

References 12 publications

Black hole complementarity versus locality

Black hole complementarity versus locality

An infalling observer in AdS/CFT

Entropy evolution of moving mirrors and the information loss problem

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