The Hofstadter problem for rational flux with even Q is studied using the chiral representation introduced in a previous paper. We explicitly show that the zero-energy states exist and are degenerate. We also discuss a formal treatment of the perturbations around these zero-energy states.
|Number of pages||7|
|Journal||Chinese Journal of Physics|
|Publication status||Published - 2003 Oct 1|
ASJC Scopus subject areas
- Physics and Astronomy(all)