QuestionCan an entangled photon go past the event horizon of a black hole & if so what might happen?

Questioner

Can an entangled photon go past the event horizon of a black hole & if so what might happen?

Would entanglement remain with some undefinable something? So some element/photon of space-time is entangled deep into the interior of a black hole?

It's probably undefined in physics, but plausible sounding guesses, speculations?

Would any entanglement be forced to remain at the event horizon regardless?

ASTROSTONER

space/time is relative.
The event horizon from the photons perspective will never be crossed.
But a distant observer would disagree.

jim_robison

space/time is relative.
The event horizon from the photons perspective will never be crossed.
But a distant observer would disagree.
And what if that "distant observer" was the entangled partner photon?

Phillip Huggan

There are borderline geometries Hawking explored in his last paper. In general, there is dephasing and entanglement. They are separate physics. Dephasing is permanent. An object can be a dephased 30% and never go back while entanglement down to 70% when passing dust or whatever can be rebuilt. The blackhole would tend to dephase entirely a photon under common geometries, thus entanglement gone. Thx to U of T library.

Questioner

There are borderline geometries Hawking explored in his last paper. In general, there is dephasing and entanglement. They are separate physics. Dephasing is permanent. An object can be a dephased 30% and never go back while entanglement down to 70% when passing dust or whatever can be rebuilt. The blackhole would tend to dephase entirely a photon under common geometries, thus entanglement gone. Thx to U of T library.
would an entangled photon be able to sustain entanglement if it circled/orbited above the event horizon or as it approached the event horizon before crossing it?

Would the time dilation have ramifications regarding sustaining entanglement?

Phillip Huggan

Yeah entangled sensors don't work well at fractions of c pertaining to space travel. 0.01c okay, 0.05c nope.
You have to stop the ship b4 using this black hole sensor.
As for the former, I'd guess there are different entanglement properties of the photon that are differently affected by gravity. Spin and helicity of inertia, say. Spin might stop working when gravity enough prevents the spin from not acting uniformly across the photon at 1000g maybe orbited is okay. While quantum effects might allow you to miss a black hole most scenarios you are completely disentangled.
I'd postulate whatever is accelerating one photon has to be custom engineered to keep the overall dephasing below 1/3. That way entanglement can work its way up as once entanglement itself gets down to 1/3-1/4 it tends to wipe itself out w/out being coddled back to the suggested 2/3 fully-phased. Dephasing is like lopping off the top of your gas tank to a certain level but with magic technology you could nearly encounter BHs and not be dephased and recover any entanglement loss.

Replies
5
Views
1K
Replies
42
Views
6K
Replies
15
Views
4K
Replies
10
Views
11K
Replies
0
Views
25K