On Thursday, July 23, 2020 at 10:30:52 PM UTC-6, Brent wrote: > > > > On 7/23/2020 8:03 PM, Alan Grayson 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. > > That's nonsense. Gravitons are linearized solutions of the weak field > equations and you're saying they can't escape from a region of infinite > curvature...see the problem? >
LC wrote that gravitons can't escape from a BH. He may have meant the weak field solutions. But why can the others, if they exist, escape from a region of infinite curvature. AG > > > 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 > > We need it because Einstein's equation has classical field variables on > the left and quantum field densities on the right. > On the right side is the stress-energy tensor. What is quantum about this? Didn't AE abhor quantum theory? AG > > Brent > > -- 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/6336ed3d-d71f-4814-a71d-4fa5135b904ao%40googlegroups.com.
