added pointer to today’s:
The perturbative quantization of gravity proceeds exactly as that of any other (effective) field (here) and its perturbations are gravitons, by definition. One can compute the experimental signature of their effects (here) and one finds that it’s non-vanishing but so tiny as to be well outside the reach of any foreseeable experimental methods.
The real issue with gravity is non-perturbatively. But that’s not to do with gravitons, which are the perturbative excitations of gravity, by definition.
]]>typo under “Tension with experiment and Incompleteness”
Jon Borenstein
]]>added pointer to today’s
re-arranged the list of references:
created subsections
and added pointer to
Nakarin Lohitsiri, David Tong, Hypercharge Quantisation and Fermat’s Last Theorem (arXiv:1907.00514)
(relating to Fermat’s last theorem)
after
The exact standard model gauge group is the subgroup of the Jordan algebra automorphism group of the octonionic Albert algebra that “stabilizes a 4d sub-Minkowski spacetime” (see there for details).
I have added pointer to today’s article by Krasnov:
]]>More concretely, it is identified with the subgroup of Spin(9) which respects a splitting (Krasnov 19)
added this pointer:
]]>The big international conference of 1974 in London was a turning point … Ellis’ catalog well reflected the state of theoretical confusion and general disarray in trying to interpret the data. But in the midst of all of this was a talk by John Iliopoulos (I think I was there too). With passionate zealotry, he laid out with great accuracy what we call the standard model. Everything was there: proton decay, charm, the GIM mechanism of course, QCD, the electroweak theory, grand unification, Higgs, etc. It was all presented presented with absolute conviction and sounded at the time just a little mad, at least to me (I am a conservative).
added pointer to today’s
added pointer to
started a section “Tension with experiment” (here)
]]>expanded list of textbook accounts and other, added missing bibliographical information, reorganized list of references slightly
]]>made a quick note that the exact gauge group is the quotient
still need to give more canonical reference
]]>Edit to: standard model of particle physics by Urs Schreiber at 2018-04-01 01:15:37 UTC.
Author comments:
added textbook reference
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