Discrete Black-Hole Radiation and the Information Loss Paradox

Abstract

Hawking's black hole information puzzle highlights the incompatibility between our present understanding of gravity and quantum physics. However, Hawking's prediction of black-hole evaporation is at a semiclassical level. One therefore suspects some modifications of the character of the radiation when quantum properties of the {\it black hole itself} are properly taken into account. In fact, during the last three decades evidence has been mounting that, in a quantum theory of gravity black holes may have a discrete mass spectrum, with concomitant {\it discrete} line emission. A direct consequence of this intriguing prediction is that, compared with blackbody radiation, black-hole radiance is {\it less} entropic, and may therefore carry a significant amount of {\it information}. Using standard ideas from quantum information theory, we calculate the rate at which information can be recovered from the black-hole spectral lines. We conclude that the information that was suspected to be lost may gradually leak back, encoded into the black-hole spectral lines.

12 pages

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Cited by in corpus (12)

• Quantum Information and Relativity Theory
• Quasinormal modes of a black hole surrounded by quintessence
• Black Holes: Eliminating Information or Illuminating New Physics?
• The Hawking cascades of gravitons from higher-dimensional Schwarzschild black holes
• Unitary Solution to a Quantum Gravity Information Paradox
• The spectrum of quantum black holes and quasinormal modes
• Quantum information and general relativity
• Black Hole Thermodynamics: Entropy, Information and Beyond
• Discrete quantum spectrum of black holes
• The quantum emission spectra of rapidly-rotating Kerr black holes: discrete or continuous?
• The Bekenstein-Hawking Corpuscular Cascading from the Backreacted Black Hole
• Natural broadening in the quantum emission spectra of higher-dimensional Schwarzschild black holes