Correction to Problem Sheet 3

There was a misplaced sign (relative to the parentheses) in problem 3. That has now been corrected.

Another Typo Correct in Homework Sheet 2

I have corrected equation (11) in homework sheet 2. The third term in the second equation of (11) should have (theta_3 - theta_2) as an argument for the sine instead of the (theta_2 - theta_3) that was there before. If you tried with the old version, you'll notice that the change of variables won't quite work.

This sheet was a bit buggy with typos. Sorry about that.

Typos Corrected in Homework 2

I have uploaded a revised version of homework sheet 2 in which minor typos have been corrected. There are two such typos:

(1) In problem 1, I changed the phrasing from "find" the phase portrait to "plot" the phase portrait to make it clearer.

(2) In problem 2c, I made the definition of q-twisted state more explicit, even though it was actually there anyway.

Neither of these typos should have caused any problems.

Update (2/01/10): There is an additional typo that might be a bit problematic. In problem 3, omega_1 = omega_3 starting in part (b). I inadvertently forgot to type that and hope that this has not caused any problems. I also found a minor typo in (3), which I have corrected (there is a factor of K missing in the denominator in the definition of rho).