Actually the ESA observations confirmed the prior Fermi Telescope observations that spacetime is smooth at and beyond the Planck scale
On Thu, Oct 31, 2013 at 3:54 AM, Bruno Marchal <[email protected]> wrote: > > On 30 Oct 2013, at 08:32, Chris de Morsella wrote: > > Bruno ~ I believe Quantum loop gravity depends on a fine grain structure > existing in spacetime. > > > Yes. I agree. I find this natural with GR and QM, but comp imposes some > continuum, and if it is given by space, that would simplify the recovering > of physics from arithmetic. (cf UDA-7). > > > > These results would seem to falsify it therefore. Spacetime on the very > small scale appears to be smoothly continuous. I would like to see these > results reconfirmed though; > > > Me too. > > > not casting doubt on the experimental methodology or the ESA science > team. Quite the opposite I think it is an elegant and powerful leveraging > down into being able to make inferences about scales I believed would be > almost forever out of our reach.**** > Kind of makes one speculate – and I do that easily LOL – if any similar > type experiments could be devised to measure properties of high energy > photons that have traversed enormous distances of spacetime in order to > perhaps determine if those vibrating strings and things are more than > beautiful math. What amazes me is how they were able to use the lever of > the vast distances traversed by these high energy photons and very > accurately measure properties of these photons and be able to use the vast > distance itself like a kind of lever to be able to infer this about a scale > that is so far beyond anything that we can directly measure or discern that > it might as well have been in some elfin land of middle earth. > > > I agree. I am far from being an experimentalist, and cannot judge the > accuracy of such incredible experiments, so I wait for more data and more > confirmations to have a sort of local opinion on this. > > Bruno > > > > > **** > -Chris**** > ** ** > *From:* [email protected] [ > mailto:[email protected] <[email protected]> > ] *On Behalf Of *Bruno Marchal > *Sent:* Tuesday, October 29, 2013 10:43 AM > *To:* [email protected] > *Subject:* Re: Universe from Pixels?**** > ** ** > ** ** > On 29 Oct 2013, at 17:12, Chris de Morsella wrote:**** > > > **** > If true – ESA experimental measurements of the polarization of ranges of > gamma rays (over a range of energies) from very distant gamma ray bursts > that have travelled across billions of light years of spacetime to reach > earth. Their experiments determined that spacetime does not have a granular > structure, which would have had a measurable effect on the polarization of > these distant gamma rays, down to a level of 10^-48 m (which is exceedingly > small)) trillions of times smaller than the Planck scale.**** > Spacetime does not appear to be granular – at least down to these > incredibly small scales. These results have lead me to question any > hypothesis that seems to depend on spacetime having a discreet granular > structure.**** > ** ** > Do you know if those are the results considered as "refuting" "loop > gravity"?**** > ** ** > In fact, I find intuitive that a quantized gravitation lead to a > quantization of space-time curvature, and itself, but comp seems to fit > better with continuous space time, as it multitplies the comp-histories in > a very smooth way.**** > In the universal dovetailing, the winner "universal subdovetailers on the > programs defined on some "rich ring" structure, might be the winner, but of > course that remains to be shown.**** > ** ** > Those questions are very hard.**** > ** ** > Bruno**** > ** ** > ** ** > ** ** > > > **** > **** > *From:* [email protected] [ > mailto:[email protected] <[email protected]> > ] *On Behalf Of *[email protected] > *Sent:* Tuesday, October 29, 2013 7:04 AM > *To:* [email protected] > *Subject:* Universe from Pixels?**** > **** > Here is a link, which makes things seem very, curious, if true.**** > **** > > http://www.dailygalaxy.com/my_weblog/2013/10/our-universe-is-made-up-of-indivisible-building-blocks-like-tiny-atoms.html#more > **** > **** > **** > -- > 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/groups/opt_out.**** > ** ** > -- > 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/groups/opt_out.**** > ** ** > 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/groups/opt_out.**** > > -- > 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/groups/opt_out. > > > 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/groups/opt_out. > -- 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/groups/opt_out.
