=== Day 28: Fermi Dirac distribution ===

== Topics ==

  - Feed back on Friday
  - Single particle states
  - Atom states are not independent, He with one electron in 2s, this energy varies if the other electron is in 1s or 3s.
  - Metals, doped semiconductors, independent model is OK.
  - Lev Landau and Fermi liquid theory: bit of history on Landau
  - Derive FD from grand partition function, make clear distinction between system states and single particle states.
  - No N!, states are distinguishable, by definition
  - Grand potential, N and U and S
  - Properties of FD distribution.

== Problems in class ==

  * XXX

== Reflection ==
Trying to find out if students really got the occupation number idea. Not sure, expnanations seem OK, but written work not. Need in class test for that.


=== Day 29: Fermi systems ===

== Topics ==

  - Review single particle states, system states
  - Review Gibbs factor, grand partition function, grand potential (no N!)
  - Review N and FD function, explain details of FD function
  - Get U and S
  - Introduce density of states
  - Approximate FD by piece-wise linear

== Problems in class ==

  * Have them try to get CV in piece wise linear approximation

== Reflection ==


=== Day 30: Title ===

== Topics ==

  - XXX

== Problems in class ==

  * XXX

== Reflection ==