On 31 Jul 2014, at 20:47, Richard Ruquist wrote:
John: Quantum theories of Physics insist that space is quantized
just like everything else.
Richard: Please provide proof that this is so. I do not believe you.
I think that you are right. Loop gravity quantized space-time, but
according to some people, this can be considered refuted by the
observation. To my knowledge, string theory does not quantize space-
time (and that might be something which disturb me a bit, as I
understand better the motivation to quantize space time (to quantize
gravitation in general relativity), than of using strings and branes).
I would bet that the correct (comp?) theory might eventually unify
string theory with a loop-gravity like theory, but for this nobody
seems to find a way how to proceed.
Bruno
On Thu, Jul 31, 2014 at 2:27 PM, John Clark <[email protected]>
wrote:
On Wed, Jul 30, 2014 at 7:57 PM, LizR <[email protected]> wrote:
> if space-time isn't an infinitely divisible continuum, it
presumably has some sort of granularity,
Our quantum theories may need work. Quantum theories of Physics
insist that space is quantized just like everything else, that is to
say space can not be continuous but must be grainy and the lumps in
space must be as large or larger than the Planck Length of
1.62*10^-35 of a meter because size is meaningless in quantum
theories if things are smaller than that. But now to everybody's
surprise there is experimental evidence that seems to say that if
space is quantized at all then the lumps must be smaller than 10^-48
of a meter; that's at least ten thousand billion times smaller than
the Planck Length, the smallest size previously thought to exist and
it makes one wonder if the smallest possible size is actually zero.
For more see:
http://www.physorg.com/news/2011-06-physics-einstein.html
John K Clark
--
You received this message because you are subscribed to the Google
Groups "Everything List" group.
To unsubscribe from this group and stop receiving emails from it,
send an email to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/everything-list.
For more options, visit https://groups.google.com/d/optout.
--
You received this message because you are subscribed to the Google
Groups "Everything List" group.
To unsubscribe from this group and stop receiving emails from it,
send an email to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/everything-list.
For more options, visit https://groups.google.com/d/optout.
http://iridia.ulb.ac.be/~marchal/
--
You received this message because you are subscribed to the Google Groups
"Everything List" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/everything-list.
For more options, visit https://groups.google.com/d/optout.
