On Saturday, February 23, 2019 at 7:25:21 AM UTC-6, John Clark wrote: > > On Fri, Feb 22, 2019 at 11:08 PM <[email protected] <javascript:>> > wrote: > > > *In GR, the paths are determined by geometry in the absence of forces, >> not by mediating particles.* > > > Yes, that's because General Relativity is a classical theory that is not > quantized, it has so far passed every experimental test posed to it with > flying colors but we know it can't be entirely correct because when we ask > it what happens when things become very small and very massive, such as in > the center of Black Holes, it gives the absurd answer of infinity. Neither > Quantum Mechanics or General Relativity works when things get massive and > small, perhaps quantizing General Relativity will fix this or maybe there > is some other way to do so. Nobody knows. > > > *I could be mistaken, but I see gravitons as being part of a distinct >> theory of gravity, which might give the same results as GR,* > > > Nobody has ever experimentally detected a graviton and it's extremely > unlikely anybody ever will, so if they make the same predictions as > standard General Relativity there would be no point in introducing the > idea. > > John K Clark > >
If all experiments proposed to determine if gravity is quantized* fail* Such measurements, they say, could enable them to uncover the quantum nature of gravity and determine whether or not gravity is quantized. https://physics.aps.org/synopsis-for/10.1103/PhysRevLett.122.071101 that is: the search for a quantized gravity is a wild goose chase what do theorists do then? (I asked Hossenfelder. No answer.) - pt -- 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 https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
