# 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…

## 19 Citations

### Hawking radiation and the quantum marginal problem

- PhysicsJournal of Cosmology and Astroparticle Physics
- 2022

In 1974 Steven Hawking showed that black holes emit thermal radiation, which eventually causes them to evaporate. The problem of the fate of information in this process is known as the “black hole…

### Black Holes: Eliminating Information or Illuminating New Physics?

- Physics
- 2017

Black holes, initially thought of as very interesting mathematical and geometric solutions of general relativity, over time, have come up with surprises and challenges for modern physics. In modern…

### Classical Collapse to Black Holes and Quantum Bounces: A Review

- Physics, Geology
- 2017

In the last four decades, different programs have been carried out aiming at understanding the final fate of gravitational collapse of massive bodies once some prescriptions for the behaviour of…

### Quantum fluctuating geometries and the information paradox

- Physics
- 2017

We study Hawking radiation on the quantum space-time of a collapsing null shell. We use the geometric optics approximation as in Hawking’s original papers to treat the radiation. The quantum…

### Relativistic collapse dynamics and black hole information loss

- Physics
- 2016

We study a proposal for the resolution of the black hole information puzzle within the context of modified versions of quantum theory involving spontaneous reduction of the quantum state. The…

### Unruh effect for inertial observers through vacuum correlations

- PhysicsThe European Physical Journal C
- 2018

We study a dynamic version of the Unruh effect in a two dimensional collapse model forming a black hole. In this two-dimensional collapse model a scalar field coupled to the dilaton gravity, moving…

### Black holes in the quantum universe

- PhysicsPhilosophical Transactions of the Royal Society A
- 2019

A succinct summary is given of the problem of reconciling observation of black hole-like objects with quantum mechanics, and interactions that accomplish this with ‘minimal’ departure from a standard description are parametrized.

### Modelling non-paradoxical loss of information in black hole evaporation

- Physics
- 2016

We give general overview of a novel approach, recently developed by us, to address the issue black hole information paradox. This alternative viewpoint is based on theories involving modifications of…

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