83 citations · 165 across the 9 of their papers we have counts for
9 papers
Flow equations for the one-dimensional Kondo lattice model: Static and dynamic ground state properties
T. Sommer
The one-dimensional Kondo lattice model is investigated by means of Wegner's flow equation method. The renormalization procedure leads to an effective Hamiltonian which describes a…
Renormalization approach to many-particle systems
K. W. Becker, A. Huebsch, T. Sommer
This paper presents a renormalization approach to many-particle systems. By starting from a bare Hamiltonian with an unperturbed part ${\cal H}_0…
Magnetic properties and spin waves of bilayer magnets in a uniform field
Torsten Sommer, Matthias Vojta, Klaus W. Becker
The two-layer square lattice quantum antiferromagnet with spins 1/2 shows a zero-field magnetic order-disorder transition at a critical ratio of the inter-plane to intra-plane coup…
Two--Dimensional BF Model Quantized in the Axial Gauge
S. Emery, M. Krüger, J. Rant +2
The two--dimensional topological BF model is quantized in the axial gauge. We show that this theory is trivially ultraviolet finite and that the usual infrared problem of the propa…
The Yang--Mills gauge field theory in the context of a generalized BRST--formalism including translations
O. Moritsch, M. Schweda, T. Sommer
We discuss the algebraic renormalization of the Yang--Mills gauge field theory in the presence of translations. Due to the translations the algebra between Sorella's $\d$--operator…
Local gravitational supersymmetry of Chern-Simons theory in the vielbein formalism
S. Emery, O. Moritsch, M. Schweda +2
We discuss the Chern-Simons theory in three-dimensional curved space-time in the vielbein formalism. Due to the additional presence of the local Lorentz symmetry, beside the diffeo…