(no subject)

[doyle]

Crap! The homework that I thought was due on Wednesday is due on Monday. And I'm at home. And I don't have it :cries:

jediowl, don't suppose you have a scanner? It doesn't seem to be on QOL (all the resources for N&FP seem a bit crap - I can't get into the lecture notes) I might email Whitaker, try and plead for a .pdf version or something.

(ETA: and now I've forgotten the address for the Physics past papers. I'm stoopid today)

(ETA2: Ah, that would be the bit on their website where there's a big link to 'Past Exams')

Comments

[owl]

1. Describe succintly the principle features of gauge theories. Show briefly how these features occur in
(i) the Yang-Mills theory
(ii) quantum chromodynamics
(iii) electroweak theory

2. Among the gluons are the combinations with colour charges (rř-yŷ) / root 2
and (rř + yŷ -2bЪ) / root 6

These appear to treat the different colours unequally so that it would matter which colour had which label. Show that this is not true by taking the specific example on p. 127 (b); compute the coupling for the quark reaction r + y --> r +y and get the same coupling -x^2/3 as was the case for r + b --> r + b.

No, I don't know what the hell it means either :-D
I hope all my little symbols for the antigluons came up okay. Basically if there's a gluon and a funny thing, that's meant to be its antigluon.

[doyle_sb4.livejournal.com]

Yay, you rock!

[owl]

*rocks*

So you can read it all okay, then?

[doyle_sb4.livejournal.com]

Yep. Though making sense of it's another matter (looking at the notes and *where* do the interactions come from, thin air?!)

[owl]

Nope, gauge bosons :D