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(Medium)   The Mysteries of Hawking Radiation: Resolutions to the information paradox   (medium.com) divider line
    More: Interesting, General relativity, Black holes, Space, Physics, Time, space-time, Universe, Spacetime  
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459 clicks; posted to STEM » on 11 Apr 2022 at 6:26 AM (11 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



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2022-04-11 9:46:17 AM  
So the Buddists are correct.   Reincarnation is the thing,
 
2022-04-11 12:17:12 PM  
That is a fun read. (Fun being short, challenging, yet not too math-y)
Thanks.
 
2022-04-11 12:28:28 PM  
It's not a paradox for information to 'disappear', imho.  The paradox is that information arose in the first place.  This issue is just the question of 'why is there something instead of nothing' looked at from the reverse position that information is the proper default state, 'how does something return to nothing', imho.
 
2022-04-11 3:12:37 PM  
The prevalent view, known as the small-corrections resolution, is that the radiation emitted by a black hole may contain information about its interior. In other terms, information is not lost but preserved in the Hawking radiation. As a result, the radiation would not be completely uniform but would contain differences at a quantum level (depending on what went into the black hole).

What does a particle/anti-particle pair where one falls in while the other escapes have to do with all the random shiat that had already fallen in?  It ain't like a planet falling in is gonna spawn an anti-planet that escapes, letting us know the planet's information.
 
2022-04-11 8:15:22 PM  

AdrienVeidt: What does a particle/anti-particle pair where one falls in while the other escapes have to do with all the random shiat that had already fallen in?


IIRC, all the information contained inside the black hole is encoded onto the event horizon's surface.

There's a good series on PBS Spacetime (youtube) about Hawking Radiation. The particle/anti-particle pair explanation is a bit of a fairy story.
 
2022-04-12 9:50:38 AM  

PartTimeBuddha: AdrienVeidt: What does a particle/anti-particle pair where one falls in while the other escapes have to do with all the random shiat that had already fallen in?

IIRC, all the information contained inside the black hole is encoded onto the event horizon's surface.

There's a good series on PBS Spacetime (youtube) about Hawking Radiation. The particle/anti-particle pair explanation is a bit of a fairy story.


Why is 'information' resistant to gravity's pull?
 
2022-04-12 12:13:52 PM  

AdrienVeidt: PartTimeBuddha: AdrienVeidt: What does a particle/anti-particle pair where one falls in while the other escapes have to do with all the random shiat that had already fallen in?

IIRC, all the information contained inside the black hole is encoded onto the event horizon's surface.

There's a good series on PBS Spacetime (youtube) about Hawking Radiation. The particle/anti-particle pair explanation is a bit of a fairy story.

Why is 'information' resistant to gravity's pull?


Photons still travel at light speed. As long as they're outside the event horizon, they're zippy.
 
2022-04-12 3:20:58 PM  

PartTimeBuddha: AdrienVeidt: PartTimeBuddha: AdrienVeidt: What does a particle/anti-particle pair where one falls in while the other escapes have to do with all the random shiat that had already fallen in?

IIRC, all the information contained inside the black hole is encoded onto the event horizon's surface.

There's a good series on PBS Spacetime (youtube) about Hawking Radiation. The particle/anti-particle pair explanation is a bit of a fairy story.

Why is 'information' resistant to gravity's pull?

Photons still travel at light speed. As long as they're outside the event horizon, they're zippy.


Okay, so the information about photons is saved.  What's that got to do with infalling matter?  Is everything supposed to be fusioned into x-rays before it hits the horizon?
 
2022-04-12 3:54:55 PM  

AdrienVeidt: Okay, so the information about photons is saved.  What's that got to do with infalling matter?  Is everything supposed to be fusioned into x-rays before it hits the horizon?


Beyond my ken to explain. Leonard Susskind has a great series of lectures on youtube where he goes into it, but if you prefer a lighter version, again I'd recommend the PBS Spacetime series on black holes. Prof Matt Dowd goes into the Holographic Principle.

Bear in mind that though something might be encoded on the Event Horizon, that certainly doesn't mean it can be accessed.

As I said, the idea of one of a pair of virtual particles close to the event horizon escaping is not quite right. There's not enough energy there for, say, a proton and an antiproton to manifest. Virtual photons are far easier, since they're simply out of phase/polarity with each other. That's why the calculations lead to a heat curve for Hawking Radiation -- also, why it's called Hawking Radiation rather than Hawking's Infinite Hydrogen Machine.
 
2022-04-12 4:02:28 PM  

AdrienVeidt: Is everything supposed to be fusioned into x-rays before it hits the horizon?


Oh. On this point, the gravity well would suggest the opposite. For an external observer, an infalling object on the Event Horizon would be vastly redshifted, I think. X-ray emissions from Black Hole events are from their accretion disks, which would tend toward the energetic.
 
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