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Are Black Holes Actually Dark Energy Stars?

nautil.us

21–30 of 129 posts

Re: Are Black Holes Actually Dark Energy Stars?

#21
post #15
post #9

Earlier quoted context omitted.

Would this be one way that information would not be destroyed, at least from the reference frame of the outside observer?

Question if you don't mind. This "information being destroyed" thing. What do they mean by information? Isn't information a human construct? How is the universe supposed to know what information is?

From my limited understanding information is meant to mean the characteristics of a given particle; the waveform, spin, etc.

Re: Are Black Holes Actually Dark Energy Stars?

#22
post #5

I managed to confuse myself into a Zeno’s paradox situation with how black holes grow. This is really exotic space. Time dialation immediately outside of the event horizon would make any matter fall so slow that it would take millions of years of time for an observer to see that material cross the horizon.

[deleted]

Re: Are Black Holes Actually Dark Energy Stars?

#23
post #15
post #9

Earlier quoted context omitted.

Would this be one way that information would not be destroyed, at least from the reference frame of the outside observer?

Question if you don't mind. This "information being destroyed" thing. What do they mean by information? Isn't information a human construct? How is the universe supposed to know what information is?

https://en.m.wikipedia.org/wiki/Physical_information

See especially the section on entropy.

Re: Are Black Holes Actually Dark Energy Stars?

#24
post #5

I managed to confuse myself into a Zeno’s paradox situation with how black holes grow. This is really exotic space. Time dialation immediately outside of the event horizon would make any matter fall so slow that it would take millions of years of time for an observer to see that material cross the horizon.

From the outside, it would never cross the horizon, it would look as if the matter would travel towards the horizon infintly long. After trillions of trillions of years the information that made up the inbound matter from the horizon will be radiated away by hawking radiation.

If you are travelling with a probe towards the horizon though, you would be able to calculate your escape velocity, so you could tell if you are inside our outside the horizon.

Its kind of awkward if you think about it... its seems like causality has 2 versions after the horizon.

[0]: https://en.wikipedia.org/wiki/Black_hole_information_paradox

[1]: https://www.youtube.com/watch?v=yMRYZMv0jRE

Re: Are Black Holes Actually Dark Energy Stars?

#25
post #14

We have people like string theorists thinking about higher dimensions in space. It occurred to me the other day when the dark matter article hit the front page that our equation for gravity works with three dimensions but those dimensions are uniform. I can turn an object with very little effort (literally without doing work) and it’s the same size from our perspective. How would it work if matter has more dimensions…

Yea that's a part of the string theoretic calculation, that some of these higher dimensions are different than the three we're accustomed to. They're curved and swirled and weird. It's pretty unclear that they're real, but it's an interesting idea

Re: Are Black Holes Actually Dark Energy Stars?

#28
post #2

I've seen a couple of articles about this guy recently and they both struck me as weirdly credulous given the apparently complete lack of evidence supporting his theory and the fact that approximately no other scientists seem to find it credible.

> The idea has found no support in the astrophysical community

They put it pretty bluntly in the article.

Re: Are Black Holes Actually Dark Energy Stars?

#29
post #15
post #9

Earlier quoted context omitted.

Would this be one way that information would not be destroyed, at least from the reference frame of the outside observer?

Question if you don't mind. This "information being destroyed" thing. What do they mean by information? Isn't information a human construct? How is the universe supposed to know what information is?

A fun way to imagine it is with Maxwell's Demon.

https://en.wikipedia.org/wiki/Maxwell%27s_demon

That is an example of one way in which information can be exchanged for work.

Re: Are Black Holes Actually Dark Energy Stars?

#30
post #14

We have people like string theorists thinking about higher dimensions in space. It occurred to me the other day when the dark matter article hit the front page that our equation for gravity works with three dimensions but those dimensions are uniform. I can turn an object with very little effort (literally without doing work) and it’s the same size from our perspective. How would it work if matter has more dimensions…

PBS Space Time did a recent episode on higher spacial dimensions and gravity.

https://www.youtube.com/watch?v=3HYw6vPR9qU

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