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Jack
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What is the standard model?
and "spin-1 gauge boson" which is called the graviton.
There is no GUT, yet. The SM is incredibly effective and accurate, annoyingly so. Everyone is pretty sure it will be replaced eventually, but exhaustive experimental searches for differences from its predictions have turned up only hints, nothing ironclad.Originally posted by Jack
Am I right in thinking that this model is not actually very effective and the GUT can replace it?
Originally posted by damgo
Gravity is not included in the Standard Model.
Originally posted by damgo
...It contains all the modern particles, their masses, various details about them (mixing matrices), and the form of the various interactions (the three forces, which are succinctly described by their symmetry groups.)...
Originally posted by Jack
What is the standard model?
Originally posted by Viper
Jack, It so easy the Standard Model is the name how particles interact. There is a colour change in quarks and glucons and this produces the weak electromagnetic theroy. This introduces W and Z bosons as the carrier particles of weak processes, and photons as mediators to electromagnetic interactions.
Suprised Jack, I know something you don`t?
Hi Jack, The following is an abstract of a paper that presumed that the mother nucleon was the Proton from which nature supposedly creates the neutron, rather than the experimentally known natural decay of the Neutron that thus becomes a Proton. If anyone wishes I have a copy of Arne's abstract of the Neutron model:Originally posted by Jack
What is the standard model?
SU(3)_color x SU(2) x U(1)Please give some idea how the three forces can be quantified thru their symmetry groups.
Originally posted by damgo
SU(3)_color x SU(2) x U(1)
Now it turns out -- though it's complex (pun?) to show -- that by imposing local U(1) gauge invariance on the photon field and requiring renormalizability, you automatically get out the QED Lagrangian; that is, the exact form of the electromagnetic interaction.
Similarly local SU(3) color gauge symmetry -- which in effect is sort of saying that the assignment of colors is arbitrary AAHHHH! this gives me some notion, SU(3) is doing something sensible that I can hope to understand -- gives you the strong force.
The picture is actually a little bit icky, because the SU(2)xU(1) gauge group I listed above give you four bosons -- but they are *not* the photon, W+, W-, and Z, because the latter three have mass. This is where the Higgs comes in and breaks the symmetry, mixing those four to give the physical W/Z/photon. I don't understand this at all yet. epicycles were introduced into the ptolemaic system for the purpose---which I regard as entirely honorable---of "saving the phenomena" and so we can
all rejoice that "the Higgs comes in and breaks the symmetry" as you say so that the W and Z thanks be to Allah the merciful turn out to have mass after all!
Your post looked all good, BTW.
The Standard Model of Particle Physics is a scientific theory that describes the fundamental particles and their interactions, which make up the universe. It explains the behavior of particles at the smallest scales and has been extensively tested and confirmed through experiments.
The Standard Model identifies 12 fundamental particles: six quarks (up, down, charm, strange, top, bottom), six leptons (electron, electron neutrino, muon, muon neutrino, tau, tau neutrino), and four force-carrying particles (photon, gluon, W and Z bosons).
Particles interact with each other through four fundamental forces: electromagnetism, the strong nuclear force, the weak nuclear force, and gravity. The Standard Model explains these interactions through the exchange of force-carrying particles between particles.
The Higgs boson is a particle predicted by the Standard Model that is responsible for giving particles their mass. Its discovery in 2012 at the Large Hadron Collider confirmed the validity of the Standard Model and its role in understanding the origin of mass in the universe.
While the Standard Model has been incredibly successful in describing the behavior of particles, it is not a complete theory of the universe. It does not incorporate gravity and does not explain certain phenomena, such as dark matter and dark energy. Scientists are currently working to develop a more comprehensive theory that can encompass all known particles and forces.