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I am not a Physicist but have deep passion about Everything ACTUALLY. I read various places that at event horizon the Quantum Entanglement is broken, one particle goes into event horizon, also a particle pair emerges one goes inside event horizon, the other escapes. My question is, if that pair was carrying some information, is that whole information divided equally between those particles or the particle inside carries no information ALL THE INFORMATION IS WITH OUTSIDE PARTICLE?!

P.S: I am coming at it from Philosophical angle ACTUALLY and I feel there SHOULD BE NO INFORMATION, KNOWLEDGE THERE. SINGULARITY HAS NO PLACE FOR ANYTHING ELSE EVEN FOR KNOWLEDGE. It resembles Zero in some senses that ALL the Information is on the surface, you cannot peek inside. That also means that Physics won't find ANYTHING INSIDE EVENT HORIZON FOR THERE IS NO "KNOWLEDGE", INFORMATION THERE.

Qmechanic
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Ashish Shukla
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1 Answers1

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The question seems to be based on something written about the black hole information paradox, where the question is what happens to information (including entanglement information) when a black hole forms and then evaporates. Various proposals have been made, with very different outcomes and problems. There is not yet any consensus.

However, nothing weird happens at the horizon from the perspective of infalling observers. If we have a lab falling into the hole, quantum entanglement between two particles in the lab will not do anything strange (there are obviously rapidly rising tidal forces, but for a big enough hole these are weak at the horizon).

The unclear question is rather what happens to entanglement when one particle goes into the hole and the other escapes. Note that there is no clear time when outside observers can say "and now the other particle has entered the singularity" - there is no universal way of slicing time in this spacetime manifold that would make the statement make sense.

So either unitarity breaks (bad), Hawking radiation contains the entanglement (how?), there is a remnant after evaporation (what?!), or something else.

Anders Sandberg
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