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Demystifier's latest activity
Demystifier
replied to the thread
I
Falling through the event horizon of an evaporating black hole
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This looks like a black hole firewall scenario, on which you may google for more info.
Today, 12:06 AM
Demystifier
reacted to
bhobba's post
in the thread
B
Excellent Free Course On Einsten, Relativity, His Views Etc from Harvard
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Like
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Hi All I just finished the following course on Einstein and Relativity...
Yesterday, 7:00 AM
Demystifier
replied to the thread
I
What exactly does quantum immortality convey?
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No, it only says that a person will always survive a quantum version of "Russian roulette".
Yesterday, 1:19 AM
Demystifier
replied to the thread
I
What exactly does quantum immortality convey?
.
No, your consciousness is split into all universes in which you are alive.
Thursday, 11:00 PM
Demystifier
reacted to
pines-demon's post
in the thread
I
When and why can ∂p/∂t=0 in position space?
with
Like
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This is problem 3.37 from the 3ed: The time derivative is outside the angle brackets in Eq. (3.112). Note that it says that for a...
Wednesday, 6:00 AM
Demystifier
replied to the thread
I
Supressing black hole evaporation?
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Is analogue Hawking radiation, namely radiation of phonons in systems with sonic horizon, "known" physics?
Tuesday, 11:17 PM
Demystifier
replied to the thread
I
Supressing black hole evaporation?
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Then something less mundane https://arxiv.org/abs/1311.4363
Sunday, 12:01 AM
Demystifier
replied to the thread
I
Supressing black hole evaporation?
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How about putting spherical mirror around the black hole?
May 4, 2024
Demystifier
replied to the thread
A
x measurement modeled in non-separable Hilbert space
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The norm that you consider, as a function of ##a##, has a jump at ##a=0##. Therefore you cannot find the value at ##a=0## by considering...
May 3, 2024
Demystifier
replied to the thread
A
"The 7 Strangest Coincidences in the Laws of Nature" (S. Hossenfelder)
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Yes.
May 2, 2024
Demystifier
reacted to
PeroK's post
in the thread
B
Why don't cars accelerate according to F = ma?
with
Like
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Interestingly, that was what everyone thought before Newton. That it takes a force to maintain constant motion. And, in the absence of...
Apr 30, 2024
Demystifier
reacted to
PeterDonis's post
in the thread
A
Feynman rules for Entangled photons
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Yes, there are. They just don't mean what your thread title implies that they mean, as @Demystifier pointed out in post #26. We don't...
Apr 30, 2024
Demystifier
reacted to
Vanadium 50's post
in the thread
A
Feynman rules for Entangled photons
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Like
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This is why I asked him Saturday if he had ever done such a calculation and if he really wanted a graduate-level answer. Based on his...
Apr 30, 2024
Demystifier
replied to the thread
A
Feynman rules for Entangled photons
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Yes, but in that case you are no longer considering two photons. And by the way, the expression "Feynman rules" means something entirely...
Apr 30, 2024
Demystifier
replied to the thread
A
Feynman rules for Entangled photons
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When you have two entangled photons, there is no such thing as amplitude of photon 1. There is only an amplitude for both photons together.
Apr 29, 2024
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