35 citations · 61 across the 10 of their papers we have counts for
Showing 2000Show all
2 papers · 1 filter
cond-mat.str-el2000
The Hubbard Model, Spinless Fermions, and Ising Spins
Klaus Ziegler
The Hubbard model is used to study an electronic system at half filling. Starting from a functional integral representation the spin-up Grassmann field is integrated out. It is sho…
cond-mat2000
Dirac Fermions on a Two-Dimensional Lattice and the Intermediate Metallic Phase
K. Ziegler
Consequences of different discretizations of the two-dimensional Dirac operator on low energy properties (e.g., the number of nodes) and their relations to gauge properties are dis…