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Stephen Hawking's Last Paper Is Now Online (vice.com)
An anonymous reader quotes a report from Motherboard: When Stephen Hawking died in March at the age of 76, the world mourned a beloved and visionary scientist. But it is some consolation that Hawking's final paper has now been published on the preprint journal ArXiv, demonstrating that even during his last days, he was still pursuing the epic cosmic questions that defined his career. Entitled "Black hole entropy and soft hair," the paper was authored by Hawking along with physicists Sasha Haco, Malcolm Perry, and Andrew Strominger. The work is the third in a series from the team and addresses Hawking's famous brainchild -- the black hole information paradox. Like many physics conundrums, the paradox emerges from the lack of coherence between quantum field theory and general relativity. On the smallest scales of matter, where atoms and quarks abound, there exists a different and seemingly contradictory set of rules to the largest scale of matter, involving stars and galaxies. The search for a "theory of everything" that reconciles these two models is one of the holy grails of modern physics, and was a lifelong fascination for Hawking.
Black holes are notable flashpoints for this tension between quantum field theory and general relativity. According to the quantum rulebook, it should be impossible for information about a particle -- its spin, configuration, mass, and other features -- to be permanently deleted from the universe. But what about matter that falls into black holes, objects with a reputation of not letting anything escape once it passes the event horizon? Can information be scrubbed inside black holes? Hawking suggested that information could indeed be deleted through Hawking radiation, which is a type of theoretical radiation that can escape from inside a black hole. This process has never been empirically observed, but the radiation would supposedly be stripped of all information about its original properties -- and that would violate the rules of the universe as we know them. In his last paper, Hawking and his colleagues speculated that a phenomenon called "soft hair" might resolve the black hole information paradox. The idea is that trails of light and gravity particles might encircle the event horizon, and could store, at the very least, entropic information about matter that fell into the black hole.
Black holes are notable flashpoints for this tension between quantum field theory and general relativity. According to the quantum rulebook, it should be impossible for information about a particle -- its spin, configuration, mass, and other features -- to be permanently deleted from the universe. But what about matter that falls into black holes, objects with a reputation of not letting anything escape once it passes the event horizon? Can information be scrubbed inside black holes? Hawking suggested that information could indeed be deleted through Hawking radiation, which is a type of theoretical radiation that can escape from inside a black hole. This process has never been empirically observed, but the radiation would supposedly be stripped of all information about its original properties -- and that would violate the rules of the universe as we know them. In his last paper, Hawking and his colleagues speculated that a phenomenon called "soft hair" might resolve the black hole information paradox. The idea is that trails of light and gravity particles might encircle the event horizon, and could store, at the very least, entropic information about matter that fell into the black hole.
But this "information can't be deleted" rule sounds suspiciously non-falsifiable. Sure, we haven't figured out how to delete any information *yet*, but how do we proclaim with confidence that it is an absolute impossibility, based merely on what we have observed?
I dunno. Maybe we should just change the rule to "information about a particle can't be deleted by any means except falling into a black hole."
There. Problem solved. At least, this approach works pretty well in legal matters, anyway.
The day of the dead is approaching. This is a sign. 6Nov18!
So if this information is encircling the event horizon, is it retrievable or is it permanently lost? If not lost, then that could provide some very interesting cosmological data.
Corruption is convincing someone that the selfless ideal is the same as their selfish ideal.
" But what about matter that falls into black holes, objects with a reputation of not letting anything escape once it passes the event horizon?"
You have a 'strong force' that binds the nucleus together (in the standard model).
You decided this must exist because protons hold together and don't fly apart from their same charges repelling.
Yet that force must be zero at the size of the nucleus, because the protons are not compressing further, they have stopped compressing, neither flying apart, nor flying together.
It doesn't matter if this strong force is a real single force, or the net of multiple forces. The effect is the same.
So you have a force that reduces to zero at a certain distance, which binds protons in a nucleus together. At shorter distances it must repel, at longer distances it must attract, which holds these protons in place at that distance to be the size of the nucleus.
So why assume that you can compress a black hole infinitely and just keep adding matter and it will compress more, when even the 'Standard model' has forces that say this would not happen.
Thought experiment #2
1) Whatever event creates one universe can happen again and again, our universe would not be special.
2) So there are lots of universes outside ours.
3) Universes with blackholes
4) Universes long created before ours
5) So blackholes have been around long before our blackholes.
6) Infinitely back in time (since the 1) applies backwards to infinity in time.
7) And yet given infinite time all matter isn't swallowed in an old black hole.
8) Hence blackholes are not the end game for matter because our universe is here.
Putting the two thought experiments together, black holes reach a maximum, when the binding force reaches zero, at which point they go boom. And a universe is created. Which explains why the region of space is free from matter before the big bang, and what came before the big bang. Just another super massive black hole. And outside our visible universe is a lot of other universes.
If the universe recycles and evolves again according to the same laws of nature, then all information will be recreated exactly the same.
Your inability to comprehend something doesn't make it invalid.
The Christians, they were right!
Having deleted several Facebook profiles worth of data, I can assure you, data can be lost. Wait.. Mark - Are you seriously telling me that you retain everything? Hmm... Just as I thought. Facebook is a Black Hole.
"Hawking's last paper gives new insights on physics" would have been juicy, but "last paper is online" resembles the note that left my grandma on the fridge before passing away, except she was much less famous.
Slashdot, fix the reply notifications... You won't get away with it...
Very interesting indeed.
Those of us who read 'Hawking's Last Paper' before found it interesting, but with speculative conclusions. At the time, only the speculation was headlined, not the science.
Are you able to comprehend what OP's saying? Stephen Hawking has not produced a single falsifiable hypothesis - what he's doing is math, not physics.
This. Joey Deacon at least was funny.
"I've been making shit up all along and you losers ate it all lololol."
https://www.youtube.com/watch?v=Il8fJ87SG-k
Violet Gives Willingly.
Well, all black girls do. They crave the white cock.
The blackholes don't exist.
Up until discovery of parity violation, physicists thought CPT conservation was one of absolute laws of universe. Conservation of information is probably heading to the same direction as well.
If strong force range is confined between quarks and gluons inside hadrons. Why donâ(TM)t physicists think the same about preservation of information, means there is certain upper conditions at which information can be preserved?
I am all for establishing links between physics of different level ( like how strong force is extremely short ranged due to color confinement), but information loss paradox doesnâ(TM)t seem to be one of them.
... wherein bright theoretical scientists try to straighten a persistent bend in their discipline that moves away from their area of expertise.
Hawking essentially says that the information comes out of the black hole, but not in a useful form that could, in theory, be used to construct an original.
Useful to whom?
Just because we can't recognize the processed information and trace it back to its original state doesn't mean shit.
The universe made us. It doesn't need use to put it back together again.
Einstein went down a similar path. He worked all his life trying to extend his theories to perfection.
With almost predictable regularity, Einstein came up with a new Theory of Everything and, like Hawking, provided no opportunity to test the ideas.
Meanwhile, younger theorists, about the same age as Albert had been in his prime, had moved on.
Einstein died trying to take dice away from God.
Hawking, like Newton and Einstein, was one of the rare talents that pop up throughout history and he deserves accolades and honours for his work.
It little behooves the best of us to comment on the rest of us.
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But did Einstein see the Winter Sunlight?
For this reason, God sends them a powerful delusion(operation of wandering)(planet) so that they will believe the lie.
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I won't aks how you know this, just take it on faith.
Brett Kavanaugh Raped Our Young Girls But Violet Gave Willingly.
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brown hole, or someone did it for him. Obviously there was some hair there.