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Research suggests Big Bang may have taken place inside a black hole

port.ac.uk

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Re: Research suggests Big Bang may have taken place inside a black hole

#261

Post by colechristensen »

avmich wrote: post #234

> But how come Penrose’s theorems forbid out such outcomes? It’s all down to a rule called the quantum exclusion principle, which states that no two identical particles known as fermions can occupy the same quantum state (such as angular momentum, or “spin”). > And we show that this rule prevents the particles in the collapsing matter from being squeezed indefinitely. As a result, the collapse halts and reverses. The…

>Then how comes the neutron stars collapse into black holes despite obeying the exclusion principle?

One of the ways to overcome one of the levels of this degeneracy pressure is electron capture which is the opposite of a kind of beta decay. Squeeze hard enough and a proton combines with an electron to form a neutron and a neutrino.

But there are several proposed levels of degenerate matter in neutron stars, the idea being that one (final?) level of this degenerate matter is dense enough to make an object smaller than its schwarzschild radius. Uncertainty is high because we have no current methods to observe any of this kind of matter.

What goes on inside the schwarzschild radius is another mystery we don't have answers from, but there are lots of ideas with various levels of legitimacy.

Quantum physics in and around singularities or things we think are singularities is not understood.

Re: Research suggests Big Bang may have taken place inside a black hole

#262

Post by codethief »

meindnoch wrote: post #101

I've read somewhere an article which posited that our 3D universe might be inside a 4D black hole. When you cross a black hole's event horizon, the radial coordinate becomes timelike, so you lose one degree of spatial freedom. Movement is still possible in the tangential directions however, so what you get is basically an N-1 dimensional universe. So maybe our 3D universe is actually matter that fell into a 4D black…

> When you cross a black hole's event horizon, the radial coordinate becomes timelike, so you lose one degree of spatial freedom.

The second half is incorrect. Since the time coordinate becomes spacelike in turn you'll still have 3 spatial degrees of freedom. Dimensions can't just vanish if you believe that spacetime is a 4D Lorentzian manifold (as physicists do).

Moreover, the singularity is not a place you can poke with a stick, once you've entered the black hole. It lies in your future, in the same way as your death.

Re: Research suggests Big Bang may have taken place inside a black hole

#263

Post by everdrive »

hshshshshsh wrote: post #195

Big bang theory no longer excites me. As long as we can't explain consciousness all these theories are pointless. All theories mere appearances in consciousness including the universe and everything we experience. Consciousness has the property to render infinite universes and theories. But we have no clue how universe creates consciousness.

Consciousness is a specific biological adaptation which is primarily focused in the management of social relationships, status, and the prolonged adolescence of children. (and their required care)

There's no reason to think that consciousness is an important question in the objective sense; it just matters to people. (and rightfully so) People wondering about consciousness in the universe might be akin to dogs wondering what the big bang smelled like.

Re: Research suggests Big Bang may have taken place inside a black hole

#264

Post by [deleted] »

meindnoch wrote: post #101

I've read somewhere an article which posited that our 3D universe might be inside a 4D black hole. When you cross a black hole's event horizon, the radial coordinate becomes timelike, so you lose one degree of spatial freedom. Movement is still possible in the tangential directions however, so what you get is basically an N-1 dimensional universe. So maybe our 3D universe is actually matter that fell into a 4D black…

[deleted]

Re: Research suggests Big Bang may have taken place inside a black hole

#265

Post by lukas099 »

johnisgood wrote: post #236
4ndrewl wrote: post #218

Earlier quoted context omitted.

Can you cite your sources please?

Most jobs are really not important either, they just keep people busy. Do you need sources for this claim, too?

Yes. Who are these people paying for jobs that don't do anything, and why are they more concerned about "keeping people busy" than their own profits?

Re: Research suggests Big Bang may have taken place inside a black hole

#266

Post by [deleted] »

asveikau wrote: post #18
gjsman-1000 wrote: post #5

Earlier quoted context omitted.

"Your honor, I could not have possibly shot that person, because yesterday might not have been before today, or at least, there is reasonable doubt that yesterday was before today, according to some physicists on crack. I treat those physicists with high regard personally though, and they have degrees that you don't have, so the court must reasonably conclude their opinions should be entertained."

I guess that's a joke, but it's actually kind of serious that causality, personhood, identity, free will, etc. are all social constructs. They are useful to us, but every now and then it's helpful and humbling to remember it's a fiction we assign, rather than fundamental. Criminal justice or the concept of culpability is one of these areas. I know I've seen material by Robert Sapolsky, a neuroscientist who does not b…

[deleted]

Re: Research suggests Big Bang may have taken place inside a black hole

#267

Post by baw-bag »

arto wrote: post #183
mmh0000 wrote: post #167

Earlier quoted context omitted.

Added. Opinions: A) I love all the scifi book recommendations that cone up on HN B) i wish you’d all stop recommending great and amazing books. My queue is so backlogged and jammed I'm never going to catch up.

So many books, so little time...

There needs to be some kind of hackernews library or goodread. I have enjoyed many books (and some no so much) but always on the look out for books.

Re: Research suggests Big Bang may have taken place inside a black hole

#268

Post by [deleted] »

everdrive wrote: post #263
hshshshshsh wrote: post #195

Big bang theory no longer excites me. As long as we can't explain consciousness all these theories are pointless. All theories mere appearances in consciousness including the universe and everything we experience. Consciousness has the property to render infinite universes and theories. But we have no clue how universe creates consciousness.

Consciousness is a specific biological adaptation which is primarily focused in the management of social relationships, status, and the prolonged adolescence of children. (and their required care) There's no reason to think that consciousness is an important question in the objective sense; it just matters to people. (and rightfully so) People wondering about consciousness in the universe might be akin to dogs wonder…

[deleted]

Re: Research suggests Big Bang may have taken place inside a black hole

#269

Post by cogman10 »

GodelNumbering wrote: post #228

This brings to mind something I keep thinking about for years (mostly from watching too many physics videos). - Gravity "slows" the time down, gravitational singularity should bring the time to a halt - Suppose there is a quantum process that makes the true singularity impossible, so all black holes immediately expand right back - Looking at it from our time scales, even if the singularity existed for a moment, it wo…

Along those lines, makes me wonder if the "bang" is in fact the fact that after the time compression, all matter/energy is effectively arriving at the same point all at once.

Assuming our universe eventually collapses into a few black holes, perhaps the spawn of a new universe is simply all the matter and energy of our universe arriving at a new point in... time? an infinite amount of time in the future.

Also, really mind bending to think the universe may just be an infinite series of black hole explosions with no beginning. It is because it always was.

Re: Research suggests Big Bang may have taken place inside a black hole

#270

Post by DrammBA »

mkl wrote: post #254
DrammBA wrote: post #194

Earlier quoted context omitted.

> [6][obsolete source] I didn't know but apparently wikipedia treats old sources as obsolete, doesn't matter if there's new information or not that would make it obsolete. I wonder if any sources supporting the notion that the earth is round must be updated every couple of years with a new source or study.

Obsolete doesn't just mean old, it means superseded by newer information.

I agree with you, wikipedia seems to disagree with both of us
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