# Black holes: complementarity or firewalls?

@article{Almheiri2012BlackHC, title={Black holes: complementarity or firewalls?}, author={Ahmed Almheiri and Donald Marolf and Joseph Polchinski and James Sully}, journal={Journal of High Energy Physics}, year={2012}, volume={2013}, pages={1-20} }

A bstractWe argue that the following three statements cannot all be true: (i) Hawking radiation is in a pure state, (ii) the information carried by the radiation is emitted from the region near the horizon, with low energy effective field theory valid beyond some microscopic distance from the horizon, and (iii) the infalling observer encounters nothing unusual at the horizon. Perhaps the most conservative resolution is that the infalling observer burns up at the horizon. Alternatives would seem…

## 1,308 Citations

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A bstractWe comment on a recent paper of Almheiri, Marolf, Polchinski and Sully who argue against black hole complementarity based on the claim that an infalling observer ‘burns’ as he attempts to…

### Complementarity endures: no firewall for an infalling observer

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A bstractWe argue that the complementarity picture, as interpreted as a reference frame change represented in quantum gravitational Hilbert space, does not suffer from the “firewall paradox” recently…

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In this note I argue that a version of complementarity is possible which evades the need for the "firewalls" recently proposed by Almheiri, Marolf, Polchinski, and Sully to burn up observers falling…

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