Hawking: Information Preservation and Weather Forecasting for Black Holes

[gary]

Originally Posted by Nature

Hawking's new work is an attempt to solve what is known as the black-hole firewall paradox, which has been vexing physicists for almost two years, after it was discovered by theoretical physicist Joseph Polchinski of the Kavli Institute and his colleagues (see 'Astrophysics: Fire in the hole!').

Originally Posted by Nature

“There is no escape from a black hole in classical theory,” Hawking told Nature. Quantum theory, however, “enables energy and information to escape from a black hole”. A full explanation of the process, the physicist admits, would require a theory that successfully merges gravity with the other fundamental forces of nature. But that is a goal that has eluded physicists for nearly a century. “The correct treatment,” Hawking says, “remains a mystery.”

Originally Posted by Nature

Hawking posted his paper on the arXiv preprint server on 22 January. He titled it, whimsically, 'Information preservation and weather forecasting for black holes', and it has yet to pass peer review.

Originally Posted by S. W. Hawking

Information Preservation and Weather Forecasting for Black Holes

S. W. Hawking

(Submitted on 22 Jan 2014)

It has been suggested [1] that the resolution of the information paradox for evaporating black holes is that the holes are surrounded by firewalls, bolts of outgoing radiation that would destroy any infalling observer. Such firewalls would break the CPT invariance of quantum gravity and seem to be ruled out on other grounds. A different resolution of the paradox is proposed, namely that gravitational collapse produces apparent horizons but no event horizons behind which information is lost. This proposal is supported by ADS-CFT and is the only resolution of the paradox compatible with CPT. The collapse to form a black hole will in general be chaotic and the dual CFT on the boundary of ADS will be turbulent. Thus, like weather forecasting on Earth, information will effectively be lost, although there would be no loss of unitarity.

Subjects:

High Energy Physics - Theory (hep-th); General Relativity and Quantum Cosmology (gr-qc)
Cite as:
arXiv:1401.5761 [hep-th]

Full paper can be download from here at the Cornell University Library -
http://arxiv.org/abs/1401.5761
http://arxiv.org/pdf/1401.5761v1.pdf

Nature article -
Stephen Hawking: 'There are no black holes'.
http://www.nature.com/news/stephen-h...-holes-1.14583

[bojan]

Reading..
Real Black holes or not, those observed objects are still massive and super-dense..
.. BH's for all practical purposes.

[bojan]

Adam Dorfman' comment:

"This title is extremely misleading and dishonest. “There is no escape from a black hole in classical theory, but quantum theory enables energy and information to escape.” he said. This simply means that black holes are different then previously described. He did not say, black holes do not exist at all. (how do you even infer this?) Further he suggests that gravity should be consider into the formula before re-defining the characteristics of black holes... This is the important information and yet you give it no value in your article.?! Second, the line that "Most physicists foolhardy enough to write a paper claiming that “there are no black holes” — at least not in the sense we usually imagine — would probably be dismissed as cranks." shows just how unscientific nature magazine has become. (and even perhaps how much they have significantly contributed to slowing down global scientific progress and diluted the quality of dialogue) Instead of looking at the solutions provided, this dangerously ignorant author, only cares about the name of the scientist and for no reason, other than brand name, violently opposes any other. Authority is respected for the wrong reasons. Why does it matter who’s opinion it is? Consider the language from start to finish and give merit from a reasonable perspective. Do the work yourself, instead of overly relying on any site and authors."

Quite so.

[bojan]

On AMPS firewall :
http://en.wikipedia.org/wiki/Black_hole_firewall

http://www.nytimes.com/2013/08/13/sc...mentsContainer

http://www.universetoday.com/108561/...ore-not-quite/