Variationsverfahren zur Untersuchung von Grundzustandseigenschaften des Ein-Band Hubbard-Modells

2001

Thesis

ei

Using different modifications of a new variational approach, statical groundstate properties of the one-band Hubbard model such as energy and staggered magnetisation are calculated. By taking into account additional fluctuations, the method ist gradually improved so that a very good description of the energy in one and two dimensions can be achieved. After a detailed discussion of the application in one dimension, extensions for two dimensions are introduced. By use of a modified version of the variational ansatz in particular a description of the quantum phase transition for the magnetisation should be possible.

@thesis{4735,
  title = {Variationsverfahren zur Untersuchung von
  Grundzustandseigenschaften des Ein-Band Hubbard-Modells},
  author = {Eichhorn, J.},
  institution = {Technische Universität Dresden, Dresden/Germany},
  school = {Biologische Kybernetik},
  month = may,
  year = {2001},
  doi = {},
  month_numeric = {5}
}