Information Retrieval from Black Holes

@article{Lochan2016InformationRF,
  title={Information Retrieval from Black Holes},
  author={Kinjalk Lochan and Sumanta Chakraborty and Thanu Padmanabhan},
  journal={Physical Review D},
  year={2016},
  volume={94},
  pages={044056}
}
It is generally believed that, a black hole, originating from collapse of matter, erases all the information about the initial state. In other words, the initial configuration of matter forming a black hole cannot be retrieved by future asymptotic observers, through local measurements. This is in sharp contrast with the expectation from a unitary evolution in quantum theory and leads to (a version of) the black hole information paradox. Classically, no-hair theorems guarantee that, apart from… 

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