Teaching week 5: Lectures will cover ideal gas entropy from multidimensional sphere, thermodynamic fluctuations and we will then start on chapter 2.

Publisert 18. mai 2015 20:45

The solution of the last set of problems is here:

Please look also through the problems we solved during the semester.

For preparation to the exam look here:


Publisert 8. mai 2015 12:10

Let us try exam set from 2009. You should try to use only 3 hours for it.

the problems can be found

The solutions of the set can be found here



Publisert 4. mai 2015 12:58

Wednesday- summary lecture.

Thursday - solving the 2003 and 2008 exam sets

Publisert 29. apr. 2015 14:39

To check if your assignment in March was approved please see the list.

Publisert 8. apr. 2015 11:22

Exact solutions of the Ising model.

Weiss and Landau mean field theory

Publisert 7. apr. 2015 18:46

the  problems about magnets we will leave for the next week 17.04.2015

Note: It seems that time is not  good. Please send email to 

with suggestions of new time (and/or dates)

Publisert 7. apr. 2015 18:39

The solution can be found

Publisert 26. mars 2015 13:26

Due to the snow all means of transport broke down, and

I'm stuck at home today. Next lecture will be 8. april and cover mean field theory and random walks.

Comulsory assignments may be handed in in 'Ekspedisjonskontoret' by 15:00 26/3. 


Have a good easter



Publisert 25. mars 2015 12:45

will cover models of magnetic systems (Ising model) and mean field theory of magnetism,

Publisert 25. mars 2015 11:07

Please note that the deadline for submission of the assignement on March 26 is 3PM. The assignement may be handed in at the Reception Office or electronically.

Publisert 24. mars 2015 19:21

Please finish problem 4 from the Problem_set_07.

In addition consider

The solutions of problem_set_07 1-3 can be found

Publisert 18. mars 2015 21:49

..  so you can work on the compulsory problem set.

Publisert 16. mars 2015 17:20

will cover chapters 5.8-6.4.

Publisert 13. mars 2015 18:21

Exercises are devoted to normal distribution, 2-dim Fermi Gas at low and high temperatures, the electron gas in magnetic field,  and to phase transitions from free fermi and boson gases to its boundary states.

The problems can be found here:

As a help to midterm exam please solve problem 1.2 from Galperin booklet.  

Publisert 11. mars 2015 16:07

This week lectures include Bosons at non-zero chemical potential, Bose Einstein condensation and Fermions. We will finish chapter 5 in the book (excluding pages 108-113).

Publisert 9. mars 2015 12:32

The symbol in problem 1.6 lacks definition. There should have been a sentence in problem 1.5 reading. 'Plot (ln(P(x)) as a function of x^2 and show that there is a linear relation between these two quantities  with slope -a.'

Publisert 23. feb. 2015 14:46

It is an example of the obligatory exercises.

Please solve

Brief solutions of Problem Set 05 can be found




Solutions of the problem set 04 can be found at the exercise  blog 2015.


Publisert 14. feb. 2015 21:57

Problems 4.6, 4.8, 4.9, 4.12, 4.13

Publisert 10. feb. 2015 13:27

Lectures: will finish chapter 3 (minus fixed pressure ensembles). We will also discuss Liouvilles theorem and non-equilibrium processes/entropy increase. 

Publisert 9. feb. 2015 15:53

Fermi-Dirac and Bose-Einstein systems. Canonical and Grand Canonical Ensembles, Problems 4.5, 4.19, 4.20,  4.24, 4.25.

Solutions are here :

Publisert 3. feb. 2015 12:37

Solutions of Problems 4.3, 4.6, 4.7 from Yuri Galperin book can be found here:

Solutions of the Set 01 can be found here:

Seminar will take place in room FO 262 from 1215-1400