HPS meets AMPS: How Soft Hair Dissolves the Firewall

Abstract

We build on the observation by Hawking, Perry and Strominger that a global black hole space-time supports a large number of soft hair degrees of freedom to shed new light on the firewall argument by Almheiri, Marolf, Polchinski, and Sully. We propose that the soft hair Goldstone mode is encoded in a classical transition function that connects the asymptotic and near horizon region. The entropy carried by the soft hair is part of the black hole entropy and encoded in the outside geometry. We argue that the infalling observer automatically measures the classical value of the soft mode before reaching the horizon and that this measurement implements a code subspace projection that enables the reconstruction of interior operators. We use the soft hair dynamics to introduce an observer dependent notion of the firewall and show that for an infalling observer it recedes inwards into the black hole interior: the observer never encounters a firewall before reaching the singularity. Our results indicate that the HPS black hole soft hair plays an essential role in dissolving the AMPS firewall.

arXiv comment32 pages, 11 figures

References in corpus (38)

• Comments on the Sachdev-Ye-Kitaev model
• Average Entropy of a Subsystem
• Black holes and the butterfly effect
• Black Holes: Complementarity or Firewalls?
• Black holes as mirrors: quantum information in random subsystems
• Fast Scramblers
• The entropy of bulk quantum fields and the entanglement wedge of an evaporating black hole
• The Page curve of Hawking radiation from semiclassical geometry
• Soft Hair on Black Holes
• On BMS Invariance of Gravitational Scattering
• Chaos in AdS${}_2$ holography
• An Investigation of AdS${}_2$ Backreaction and Holography
• BMS supertranslations and Weinberg's soft graviton theorem
• Decoherence, Chaos, and the Second Law
• Multiple Shocks
• Flat Space Amplitudes and Conformal Symmetry of the Celestial Sphere
• Superrotation Charge and Supertranslation Hair on Black Holes
• A Conformal Basis for Flat Space Amplitudes
• Gauge/Gravity Duality and the Black Hole Interior
• Gluon Amplitudes as 2d Conformal Correlators
• Islands outside the horizon
• Black Hole Entropy and Soft Hair
• Black Hole Entanglement and Quantum Error Correction
• Models of AdS_2 Backreaction and Holography
• Shaving off Black Hole Soft Hair
• Quantum chaos: a decoherent definition.
• Black Hole Horizons and Complementarity
• Soft Hair as a Soft Wig
• The Information Paradox for Black Holes
• Black hole memory effect
• Soft Factorization in QED from 2D Kac-Moody Symmetry
• The Soft $\mathcal{S}$-Matrix in Gravity
• Black Hole Information
• Entanglement Wedge Reconstruction using the Petz Map
• Reanalyzing an Evaporating Black Hole
• The Interior of a Unitarily Evaporating Black Hole
• Observer-dependent black hole interior from operator collision
• Kerr-Newman Black Hole Entropy and Soft Hair

Cited by in corpus (21)

• Lectures on Celestial Amplitudes
• Shifting Spin on the Celestial Sphere
• Brown-York charges at null boundaries
• Quantum Extremal Islands Made Easy, Part IV: Massive Black Holes on the Brane
• Revisiting the Shadow Stress Tensor in Celestial CFT
• Black Hole S-matrix for a scalar field
• Black Hole Shadow with Soft Hair
• Chaos in Celestial CFT
• Soft black hole information paradox: Page curve from Maxwell soft hair of a black hole
• An order-unity correction to Hawking radiation
• Soft theorems in curved spacetime
• What can we learn about islands and state paradox from quantum information theory?
• Replica wormhole as a vacuum-to-vacuum transition
• Soft photon radiation and entanglement
• Soft thermodynamics of gravitational shock wave
• Evaporating black holes and late-stage loss of soft hair
• Dressed Tunneling in Soft Hair
• The classical dynamics of gauge theories in the deep infrared
• Conic Sections on the Sky: Shadows of Linearly Superrotated Black Holes
• Circumventing the black hole hair-loss problem
• Hawking radiation of Dirac particles from soft-hairy black holes