On Friday, July 24, 2020 at 4:38:20 AM UTC-6, Lawrence Crowell wrote: > > On Thursday, July 23, 2020 at 10:03:36 PM UTC-5 [email protected] wrote: > >> If such a theory could be constructed, it would have particles to >> manifest excited states, called gravitons. But for a BH, gravitons >> generated by its mass couldn't escape, so they couldn't function as force >> carrying particles as in other quantum field theories. We'd still need >> Einstein's GR to account for the gravitational "force" via curvature of >> space-time. So what would a quantum theory of gravity buy us? Why do we >> need it? AG >> > > The way you state this illustrates considerable confusion and in these > threads I and others have indicated how to think of this. This does not > involve gravitons coming out of black holes. You have repeated this error a > number of times. >
What error are you referring to? I was just POSTULATING that IF a quantum theory of gravity is possible, gravitons would exist but couldn't escape a BH and thus couldn't function as force carrying particles analogous to photons for QED. We'd still need Einstein's theory of gravity based on curvature of space-time to explain the gravity field external to a BH. So what would be gained from such a quantum theory? I have no problem with gravitons existing in a weak field approximation of GR, and this being a linear quantum theory. AG > > A weak low energy quantum gravitation is easy to derive. The low energy > limit of gravitation is linear because terms in the curvature involving the > square of connection terms are much smaller. This makes gravitation and > gravitational waves linear. Quantization is not much different from > quantizing electrodynamics in QED. The gravitational waves detected by the > LIGO are long wavelength and with small amplitude. There should be > signatures of gravitons there which would be linear. As the wavelength > shortens the energy increases and as this approaches TeV and higher energy > the nonlinear terms become appreciable. The nonlinear feature of > gravitation, and that it is an exterior fibration so the field correlates > direction with the quantum wave, means this is a nonlinear quantum > mechanics, which is a contradiction of quantum mechanics. > > LC > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/39117eee-dff8-4c92-b97c-e1d4d1013759o%40googlegroups.com.
