Ondrej Certik wrote: > On Thu, Oct 8, 2009 at 3:50 AM, jegerjensen <jensen.oyv...@gmail.com> wrote: > >> Ooops! I have to correct myself: >> >> >>> The reason I chose the sparse format for the Fermionic case was not >>> because of storage considerations. Rather because I wanted to treat >>> problems without depending on the number of particles and the size of >>> the model space. I believe the framework will be much more flexible if >>> we can avoid specifying the fermi level. >>> >> FermionState actually takes the fermi_level as an argument, so in that >> sense, the fermi level is specified. What I mean is that I want to >> work with symbolic state indices, like in "single particle orbit i". >> With a dense representation, how can you store the information that >> "state i" is occupied? >> > > > I still haven't find time to thorougly test it --- I'll do so soon, > sorry about it. Btw, I was working on our 1D FEM code, that I will use > for solving the radial schroedinger equation: > > http://hpfem.org/hermes1d/ > > and I also want to integrate it with sympy, so that one can write a > symbolic differential equation and it will solve it automatically. > > Btw, Øyvind, do you know how to use green functions to calculate the > ground state of this system (just energy would be enough): > > http://certik.github.com/theoretical-physics/book/src/qm-examples.html > > I have calculated that analytically, but I would be curious to apply > green functions to that (and ideally sympy through your patches :), to > see if I get the same result. > > > Ondrej > > > > > Ongrej, it is not python, but have you ever looked at -
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