74 citations · 102 across the 2 of their papers we have counts for
3 papers
cond-mat.str-el1999★ 74 cited
Reentrant charge order transition in the extended Hubbard model
R. Pietig, R. Bulla, S. Blawid
We study the extended Hubbard model with both on-site and nearest neighbor Coulomb repulsion ( and , respectively) in the Dynamical Mean Field theory. At quarter filling, the…
hep-lat1997★ 28 cited
Low temperature expansion of the gonihedric Ising model
R. Pietig, F. J. Wegner
We investigate a model of closed -dimensional soft-self-avoiding random surfaces on a -dimensional cubic lattice. The energy of a surface configuration is given by $E=J(n…
hep-lat1996
Phase Transition in Lattice Surface Systems with Gonihedric Action
Rainer Pietig, Franz J. Wegner
We prove the existence of an ordered low temperature phase in a model of soft-self-avoiding closed random surfaces on a cubic lattice by a suitable extension of Peierls contour met…