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Physicists come close to resolving the black hole information paradox (2020)

quantamagazine.org

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Re: Physicists come close to resolving the black hole information paradox (2020)

#3
Quanta is great at explaining deeply technical scientific topics like these. They put the effort into making analogies and comparisons for even the most esoteric theoretical constructs like the ones in this article. I can't judge if they're accurate, owing to not being a theoretical physics Ph.D., but it's always an entertaining read.

Re: Physicists come close to resolving the black hole information paradox (2020)

#4

Clicked this thinking it was about the double slit experiment observer-effect. Maybe that's not exactly a paradox, but I still can't wrap my head around it.

The easiest way to wrap your head around is to:

1. Abandon for a moment the idea that we are special

2. Imagine what the most simplified agent that "experiences" things would look like. For example a simple machine that observed am experiment and reduces it into a simple "do I see interference bands or do I see only one band?" and records it to some simple memory.

3. Let the wave in superposition interact with the machine and compute what happens to the machine now that it is itself entangled with the wave

4. Very hard math

5. The machine is in a superposition state of various state, each observing the wave collapse

Re: Physicists come close to resolving the black hole information paradox (2020)

#6

Clicked this thinking it was about the double slit experiment observer-effect. Maybe that's not exactly a paradox, but I still can't wrap my head around it.

I don't think anyone fully has their head around wave-particle duality. There are many different interpretations and as I understand it none of them (or none of the major ones) are even falsifiable.

My gut says though, that the main problem is probably thinking it is ever possible to be outside the experiment.

Re: Physicists come close to resolving the black hole information paradox (2020)

#7
post #4

Clicked this thinking it was about the double slit experiment observer-effect. Maybe that's not exactly a paradox, but I still can't wrap my head around it.

The easiest way to wrap your head around is to: 1. Abandon for a moment the idea that we are special 2. Imagine what the most simplified agent that "experiences" things would look like. For example a simple machine that observed am experiment and reduces it into a simple "do I see interference bands or do I see only one band?" and records it to some simple memory. 3. Let the wave in superposition interact with the ma…

> observed am experiment

> Let the wave in superposition interact with the machine

This is the key point right, that an observation cannot be made without a very real, physical, interaction, that necessarily influences the thing being observed?

Re: Physicists come close to resolving the black hole information paradox (2020)

#8

Clicked this thinking it was about the double slit experiment observer-effect. Maybe that's not exactly a paradox, but I still can't wrap my head around it.

I don't think anyone fully has their head around wave-particle duality. There are many different interpretations and as I understand it none of them (or none of the major ones) are even falsifiable. My gut says though, that the main problem is probably thinking it is ever possible to be outside the experiment.

I believe that is called super-determinism, but would welcome correction or refinement.

Re: Physicists come close to resolving the black hole information paradox (2020)

#9

Earlier quoted context omitted.

I don't think anyone fully has their head around wave-particle duality. There are many different interpretations and as I understand it none of them (or none of the major ones) are even falsifiable. My gut says though, that the main problem is probably thinking it is ever possible to be outside the experiment.

I believe that is called super-determinism, but would welcome correction or refinement.

I believe you're right: https://www.youtube.com/watch?v=JnKzt6Xq-w4

Re: Physicists come close to resolving the black hole information paradox (2020)

#10

Clicked this thinking it was about the double slit experiment observer-effect. Maybe that's not exactly a paradox, but I still can't wrap my head around it.

I don't think anyone fully has their head around wave-particle duality. There are many different interpretations and as I understand it none of them (or none of the major ones) are even falsifiable. My gut says though, that the main problem is probably thinking it is ever possible to be outside the experiment.

Can you explain what you mean?

When I think of wave-particle duality, I think its just the expression of 2 facts. Matter waves show interference effects. Matter waves are only ever observed in a definite position, never in a superposition.

But position isnt special right? We never observe a superposition of momentum (move at 2 speeds) either. And neither are macroscopic states, we never observed an (1/sqrt(2))(alive + dead) cat either.

So evolution isn't observation and intermediate states aren't real.

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