Numerical Investigation of the 2D N=2 Wess-Zumino Model (2008)
Wozar, Christian, Bergner, Georg, Kaestner, Tobias, Uhlmann, Sebastian, Wipf, Andreas
We study lattice formulations of the two-dimensional N=2 Wess-Zumino model with a cubic superpotential. Discretizations with and without lattice supersymmetries are compared. We observe that the...
Inverse Monte-Carlo and Demon Methods for Effective Polyakov Loop Models of SU(N)-YM (2008)
Wozar, Christian, Kaestner, Tobias, Wellegehausen, Bjoern H., Wipf, Andreas, Heinzl, Thomas
We study effective Polyakov loop models for SU(N) Yang-Mills theories at finite temperature. In particular effective models for SU(3) YM with an additional adjoint Polyakov loop potential are...
Two-Dimensional Wess-Zumino Models at Intermediate Couplings (2008)
Kaestner, Tobias, Bergner, Georg, Uhlmann, Sebastian, Wipf, Andreas, Wozar, Christian
We consider the two-dimensional N=(2,2) Wess-Zumino model with a cubic superpotential at weak and intermediate couplings. Refined algorithms allow for the extraction of reliable masses in a region...
Supersymmetric lattice models in one and two dimensions (2007)
Kaestner, Tobias, Bergner, Georg, Uhlmann, Sebastian, Wipf, Andreas, Wozar, Christian
We study and simulate N=2 supersymmetric Wess-Zumino models in one and two dimensions. For any choice of the lattice derivative, the theories can be made manifestly supersymmetric by adding...
Z_3 Polyakov Loop Models and Inverse Monte-Carlo Methods (2007)
Wozar, Christian, Kaestner, Tobias, Uhlmann, Sebastian, Wipf, Andreas, Heinzl, Thomas
We study effective Polyakov loop models for SU(3) Yang-Mills theory at finite temperature. A comprehensive mean field analysis of the phase diagram is carried out and compared to the results obtained...
Low-dimensional Supersymmetric Lattice Models (2007)
Bergner, Georg, Kaestner, Tobias, Uhlmann, Sebastian, Wipf, Andreas
We study and simulate N=2 supersymmetric Wess-Zumino models in one and two dimensions. For any choice of the lattice derivative, the theories can be made manifestly supersymmetric by adding...
Wozar, Christian, Kaestner, Tobias, Wipf, Andreas, Heinzl, Thomas
This paper concludes our efforts in describing SU(3)-Yang-Mills theories at different couplings/temperatures in terms of effective Polyakov-loop models. The associated effective couplings are...
Generalized Potts-Models and their Relevance for Gauge Theories (2007)
Andreas Wipf, Thomas Heinzl, Tobias Kaestner, Christian Wozar
We study the Polyakov loop dynamics originating from finite-temperature Yang-Mills theory. The effective actions contain center-symmetric terms involving powers of the Polyakov loop, each with its...
Generalized Potts-Models and their Relevance for Gauge Theories (2006)
Wipf, Andreas, Heinzl, Thomas, Kaestner, Tobias, Wozar, Christian
We study the Polyakov loop dynamics originating from finite-temperature Yang-Mills theory. The effective actions contain center-symmetric terms involving powers of the Polyakov loop, each with its...
Phase Structure of Z(3)-Polyakov-Loop Models (2006)
Wozar, Christian, Kaestner, Tobias, Wipf, Andreas, Heinzl, Thomas, Pozsgay, Balazs
We study effective lattice actions describing the Polyakov loop dynamics originating from finite-temperature Yang-Mills theory. Starting with a strong-coupling expansion the effective action is...
Effective Lattice Actions for Finite-Temperature Yang-Mills Theory (2005)
Heinzl, Thomas, Kaestner, Tobias, Wipf, Andreas
We determine effective lattice actions for the Polyakov loop using inverse Monte Carlo techniques.
Effective Actions for the SU(2) Confinement-Deconfinement Phase Transition (2005)
Heinzl, Thomas, Kaestner, Tobias, Wipf, Andreas
We compare different Polyakov loop actions yielding effective descriptions of finite-temperature SU(2) Yang-Mills theory on the lattice. The actions are motivated by a simultaneous strong-coupling...