On 12/23/2018 8:45 PM, Jason Resch wrote:
On Sat, Dec 22, 2018 at 9:33 PM Brent Meeker <meeke...@verizon.net
On 12/22/2018 12:04 PM, Philip Thrift wrote:
Theoretical physicists developed a theory called loop quantum
gravity in the 1990s that marries the laws of microscopic
physics, or quantum mechanics, with gravity, which explains the
dynamics of space and time. Ashtekar, Olmedos and Singh's new
equations describe black holes in loop quantum gravity and showed
that black hole singularity does not exist.
"In Einstein's theory, space-time is a fabric that can be divided
as small as we want. This is essentially the cause of the
singularity where the gravitational field becomes infinite. In
loop quantum gravity, the fabric of space-time has a *tile-like
structure*, which cannot be divided beyond the smallest tile. My
colleagues and I have shown that this is the case inside black
holes and therefore there is no singularity," Singh said.
"These tile-like units of geometry--called 'quantum
excitations'-- which resolve the singularity problem are orders
of magnitude smaller than we can detect with today's technology,
but we have precise mathematical equations that predict their
behavior," said Ashtekar, who is one of the founding fathers of
loop quantum gravity.
But is this consistent with https://arxiv.org/abs/1109.5191v2
which showed spacetime to be smooth down to 1/525 of the Planck
Wouldn't this be a successful prediction of Bruno's theory? In
another thread you said it had only made retrodictions, but wasn't one
of Bruno's predictions that space and time would be continuous (not
discrete), therefore it would predict LQG is false, and then
https://arxiv.org/abs/1109.5191v2 would be a confirmation of that.
First, I don't see that his theory even predicts a topoloical space.
Second, Newton said space is a continuum so it's not a prediction
peculiar to Bruno.
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