April

April

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Sunday Monday Tuesday Wednesday Thursday Friday Saturday

1
lecture canceled
2 3
lecture 19

Density matrix for two non-interacting particles, quantum correlations as an effective classical pair interaction, N-particle partition function in the position-space basis, partition functions for non-interacting quantum ideal gas

HW #5 due
4 5
lecture 20

Classical partition function in the occupation number representation, average occupation number, the classical vs quantum limits of the ideal gas

make-up lecture
6

7 8
lecture 21

The quantized harmonic oscillator as bosons, the Debye model for the specific heat of a solid, black body radiation
9 10
lecture 22

The quantum ideal gas, standard functions, pressure, density, energy, the leading correction to the classical limit
11 12 13

14 15
lecture 23

The degenerate Fermi gas, ground state energy, the Sommerfeld expansion, chemical potential at finite temperature
16 17
lecture 24

Specific heat of degenerate Fermi gas, Pauli paramagnetism

HW #6 due
18 19 20

21 22
lecture 25

The ideal Bose gas, Bose-Einstein condensation in an ideal gas of free bosons
23 24
lecture 26

Classical spin models, constant magnetization vs constant magnetic field ensembles, broken symmetry and the possibility for a phase transition in the thermodynamic limit, Ising phase diagram
25 26 27

28 29
lecture 27

Mean-field solution of the Ising model, critical exponents

HW #7 due
30