This fascinating pattern is an example of diffusion-limited aggregation in 3D created by Paul Bourke.
This is the exercise blog of FYS4130. The idea is to facilitate communication between students and teachers of this course outside of teaching hours. Sometimes you just do not want to wait to have your frustration vented, anxiety relieved or curiosity rewarded by insight; in these cases, this blog is the place to post questions and comments and get responses from Eirik, Luiza and J?rgen, as well as your fellow students.
For the session on May 13 (which has been cancelled, but you should still finish the problem set) you work with the Master equation and the Ising model. Do problem 10.5 in Sethna's book, and the first problem in this problem set from 2012, which is also linked here.
For the session on May 6 do the exam from 2009. Try to finish within the time limit the students had (3 hours).
For the session on April 29 you will be working with the Ising model. Do this problem set from 2010, which is also linked here.
For the session on April 22 do this problem set on Weiss mean field theory of magnets.
This problem set is part of the requirements for the course. You have to hand in a written, printed or electronic report no later than Wednesday April 9 at 16:00. Your report will be evaluated on a pass/fail scale.
For the session on 25 March we'll go back to fermions, which we skipped before. Do this problem set from 2010, which is also linked here. Note that in 1c when T --> 0 the expression given is for Cv, not for U.
We continue work on identical quantum particles, focusing on Bose-Einstein condensation. For the session on March 18 do this problem set from 2010, which is also linked here.
We will also be assigning problems from the book Statistical Mechanics: Entropy, Order Parameters, and Complexity, by James P. Sethna (a local copy is linked here) and from past exams.
For the session on 11 March do problems 7.1 and 7.2 from Sethna's book, problem 7.10 from Yuri's booklet and problem 3 from the 2005 exam.
The problems to be discussed on 4 March deal with fluctuations and with the differences between the classical and quantum statistics. They are 4.24, 5.5, 5.7 and 5.9 in the booklet.
You can download the problems that will be discussed on February 25 here. They involve both analytical calculations and the writing of some simple computer scripts.
The problems that will be discussed on 18 February are 4.8, 4.9, 4.12 and 4.13 in the booklet. They concern the partition function of gases that interact with their environment, and anharmonic oscillators.
This week's exercises are diverse: they concern a set of oscillators, a model for rubber, a gas, and quantum statistics. They are 4.3, 4.5, 4.6 and 4.26 in the booklet. They will be discussed on 11 February.
You will find the problems for this week here. They will be discussed on 4 February.
For the session on 28 January, finish doing problem 2.7, then do problems 1.1 and 2.1 in Yuri's booklet. If you want more (optional), show that equations (1.26)-(1.28) in the compendium hold (use the version dated 7 January 2014).
Many of the exercises we will assign are from Yuri Galperin's list of problems for FYS203, an earlier version of this course.
This week's problems are 2.2, 2.5 and 2.7.
Welcome to the blog! Here we post about the topic of the weekly lectures and the problem set for the weekly tutorials. Enjoy and please leave a message if you have any other requests.
