On Sat, Dec 22, 2018 at 9:33 PM Brent Meeker <meeke...@verizon.net> wrote:

> On 12/22/2018 12:04 PM, Philip Thrift wrote:
> https://www.eurekalert.org/pub_releases/2018-12/lsu-be122018.php
> 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 length?


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.


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