On Friday, January 11, 2019 at 4:51:24 PM UTC-6, Bruce wrote: > > On Sat, Jan 12, 2019 at 9:29 AM Lawrence Crowell <[email protected] > <javascript:>> wrote: > >> On Thursday, January 10, 2019 at 7:18:21 PM UTC-6, Brent wrote: >>> >>> On 1/10/2019 4:21 PM, John Clark wrote: >>> >>> *So even Feynman knew that there was no theoretical value for the FSC, >>>> alpha.* >>>> >>> >>> No, he knew very well there was a theory that could come up with a >>> value because his own Feynman Diagrams could do it. But what he didn't know >>> and what nobody knows is why his theory came up with that particular pure >>> number when he never specifically stuck that number into the rules on how >>> the diagrams should operate. >>> >>> >>> The fine structure constant is e^2/hbar*c. Those three values are >>> measured independent of any Feynman diagrams of quantum field theory. The >>> calculation using Feynman diagrams is of the anamolous magnetic moment. A >>> correction to the value of g that depend on relativistic effects (hence the >>> occurence of c in the denominator). The anamolous magnetic moment can be >>> measure experimentally and using Feynman's diagrams and the measured values >>> of e, hbar, and c a value can be calculated that includes the relativistic >>> effects of quantum field theory. That's why the agreement with measurement >>> is significant. >>> >>> Brent >>> >> >> Everyone seems to be overlooking charge renormalization. >> > > Do you really think that that is relevant? How? > > Bruce >
The physical charge is a bare mass corrected by a correction term e = e' + δe. Charge adjusts with energy in a renormalization group flow of adjustable parameters. At EW unification energy the fine structure constant is around 1/128. As E → 0 the RG flow reaches an attractor point that is the α = e^2/4πεħc. This is computed for the renormalized physical charge e from all radiative corrections possible. LC > > 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 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.
