On 12/4/2019 2:50 AM, Lawrence Crowell wrote:
On Tuesday, December 3, 2019 at 8:32:43 AM UTC-6, Philip Thrift wrote:
On Tuesday, December 3, 2019 at 8:02:29 AM UTC-6, Lawrence Crowell
wrote:
For symmetry protected quantum states, which are local
entanglements, they are local because the symmetry or group
action is generally covariant. This covariant property
enforces what we think of as space and time.
LC
It's reasonable that space and time precedes symmetry. We get
symmetries from spacial measurements.
@philipthrift
An observer witnessing a black hole emit Hawking radiation discovers
that while quantum states are approaching the event horizon they also
appear as hawking radiation removed from the black hole. The entire
notion of quantum states and events as localized in regions of space
is not entirely applicable.
Right. So how can they "approach the event horizon"? How can they move
through space when they are not even localized?
Brent
What symmetries exist with these quantum states or field are then not
tied to local geometry. Local geometry is something that emerges
instead from the symmetries of quantum fields. This is because they
are quantum gravitational. The quantum fields approaching the event
horizon, or on the stretched horizon are pure Planck oscillator modes.
Two gravitons that scatter either do so as a 4 point interaction,
similar to a φ^4 field theory, or they merge to form a black hole in a
3-point interaction so the quantum BH decays via a 3-point interaction
into gravitons. There is no procedure for determining which of these
amplitudes occurs, and in fact they both do. QM is odd that way. As a
result there is no fundamental meaning to their being some point where
a gauge action occurs.
As Arkani Hamed puts it, "Space must die."
LC
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