Hi all.
I was wondering about symmetries in physics, and have a couple of questions.
The symmetries of space/time translation and rotation are often explained in terms of doing an experiment e.g. 10m away instead of right here and getting the same result, as long as we are in the same...
Thanks for replying. I understand the example that you gave, but unfortunately mine is more complicated! My equation is:
\ddot{\psi} + 4g_{2}\dot{\psi} + 4g_{1}\cos(t)\sin(\psi) = 0
I can write this as two first order equations for \psi_1 = \psi and \psi_2 = \dot{\psi}:
\dot{\psi}_1 =...
Hi all,
I am swiftly learning that past the undergraduate level we can't really solve anything explicitly, unless we are really lucky with the problem. In my research I have an ODE which is nonlinear and nonautonomous and is awkward to analyse.
My question is this: given some information...
Right, I forgot the rescaling but was nearly there! It seems to me though that having the same Hamiltonian or close enough so that we can find fixed points corresponds to a rather special situation.
I'll take a look at that book though, hopefully that will clear things up.
Thanks for your...
I am currently trying to get my head round RG in the context of statistical mechanics and am not succeeding! I would be grateful for any help. I have a specific question, but any clarification of RG in general would be useful. Here is my understanding of the main ideas:
1. Define...
After a while reading physicsforums.com from the shadows, I have decided to emerge and ask a question or two.
I was reading a review article on extended irreversible thermodynamics recently, but the EIT isn't relevant - it was something in the intro that caught my eye.
"The variables used...