James Fodor

speaker

3,084 appearances 4 recordings 1 series first heard Jun 2026 last heard 30 Aug

James Fodor’s voice in public audio — every appearance, attributed to the second.

Trend

recordings per month · last 12 months

Recordings per month over the last 12 months — 4 in all, peaking in Aug 2026 with 2.

Appearances

newest first · ▶ plays the moment

The Science of Everything Podcast · Episode 164: Gauge Theory and the Higgs Boson · 30 Aug 2026 podcast

And that corresponds to these three gauge bosons that mediate interactions of the weak nuclear force.

So that's the SU two part of of the standard model.

Now let's go to the SU three part, the most complicated part.

So just as the U1 describes electromagnetism, the SU2 describes the weak nuclear force, the SU3, of course, describes the strong nuclear force.

And so here, instead of using two by two matrices to describe the invariances of the gauge transformations in our Lagrangian, we now use three by three matrices.

So there's there's even more redundancies.

The difference is that the redundancies here come not from the um weak doublets, instead it comes from the color charges, as you as you might have imagined.

So remember that there's three different color charges and also the corresponding anticharges.

Each of them carries its own field, which has its own phase term.

So now we're going to have transformation terms between all three of these types of fields.

And theoretically that would give rise to actually the that group, the U3 group, is described by nine different generators, but we we lose one because of it's the special unitary group.

So we get only eight instead of nine.

And those eight different generators of this SU3 group that describes these transformations corresponds to our eight gluons.

I mentioned before that there's multiple different types of gluons, but I didn't exactly explain how many.

That's because to understand it, you kind of need to understand the gauge theory that describes the mathematics of it.

But there's actually eight different gluons.

We often group them together and talk about as the gluon, which is a bit misleading because these diagrams also show it as one particle.

But there's actually eight of them.

They're all pretty similar.

I mean

Showing 361–380 of 3,084 · page 19 of 155